The cpc1100 is a tank, I personally have no issues with vibration on that, so I'd suggest buying suppression pads last, IF you really think you need them.
A telrad is a nice finder, some people love the Celestron StarSense AutoAlign. I don't like to spend $330 for something I can do myself in the same amount of time.
100% agree with Mike on a good astro chair.
the wifi module I guess would be for using your phone or tablet to drive the thing, but the hand controller drives it just fine too. If you use a phone or tablet, you need to watch the brightness, or it could ruin your night vision, making it harder to see that faint object you are trying to look at. Now granted I don't have this, but it wouldn't be in my list of stuff I need on the first night out.
A decent piece of software is Sky tools. You can download a free version that only works with 4.5" scopes BUT here is my logic, if you can see it in a 4.5" you can DEFINITELY see it in an 11 inch. If you like the software, it's not super expensive, but real easy to try it out first, and it would give you a list of the first chunk of objects to try to find.
As for cases, you don't remove the OTA from the fork arms, but it will fit in a Stanley case fine. I have some 2" thick foam from a hobby store making a 4" thick bottom, a 2" thick back, and then I have to put the scope in at a slight angle, and I usually put a 4th piece of foam that drapes over the top, and a bit on the front. She's a beast getting in an out of my SUV though. I keep my tripod in a cheap duffel bag.
The baader click lock is if you want to use a normal (non SCT threaded) diagonal. I have the celestron threaded 2" diagonal , and I've never been concerned with it falling off the scope. SOMETIMES at outreach a kid will use the eyepiece as a handle and twist it a quarter of a turn, but it's survived.
On the power tank...and granted it's easy to spend other peoples money, but they have a new tank out that MIGHT be a better fit. I just bought it, only had it out 3 times so far, but I'm liking it. https://www.telescop...wertank-lithium
I did have dew tonight, and couldn't use my 12v dew heater because this doesn't have a cigarette port, but if I was more aware of the dew point it wouldn't have been an issue. This tank seems like (on writing anyways) it will take more recharges, and can be ran down without harming the battery. That 7-amp you don't want it to go under 50%.
The focal reducer for the HD is a lot more expensive than the non, but it gives you that wider view when needed. I wouldn't buy it right away, use the scope first and see if things are fitting well in the eyepiece or if a wider field would make sense, and watch the classifieds because maybe you'll find one $100 cheaper than new.
Moon filter, I personally buy and often use the cheap zhumell
I'm sure someone reading this would argue that a lumicon 900 dollar moon filter is .025% better, but it's the moon, it's bright and you want it to not be so bright, and that is easily accomplished with a cheaper polarizing moon filter.
Other filters, I don't like the zhumell, we had a filter shoot out one time and the Orion Ultrablock filter was almost indistinguishable form it's Lumicon counterpart and half the price. BUT, try to look at some nebula first and see if they look ok or if you think you want to get more out of them, while maybe losing some background stars. Some objects I like the filter, some I don't, so it's probably a personal preference thing.
On eyepieces, Ethos and televues in general are a heck of a nice eyepiece. I personally use explore scientific in my scope, that are priced a little nicer. My most used eyepiece is my Explore Scientific 30mm 82 degree eyepiece. Followed by my 20mm 100 degree, and then probably my 9mm 100 degree (if conditions allow for that much magnification). IF I were to try to barlow a ES 20mm 100 degree eyepiece, it would probably stick out 8 inches from the diagonal, because the 100 degree ES and Televue's are kind of long.
Ok, onto the wedge and AP. I had a wedge. I think at the time I was 33ish. to get this cpc1100 on the wedge (by my self), I had to pick it up (using mostly my lower back and groin in a twisting jerking motion ), swing it, darn near so it was parallel to the ground and hope it landed on the wedge in a way I could lock it down. SCARY STUFF with a nice scope like that. I loaned the wedge to a friend and he said him and his wife struggled to get it on the wedge. So eventually he assembled it on it's side, and him and his wife stood it up TOTALLY screwing up it being level. So it's your money, do what you want, but the wedge wasn't for me, and wasn't for my buddy. And to be perfectly honest, my buddy, sold his cpc1100 tripod and fork arms and put the OTA on a Celestron CGEM DX mount so he could do AP. Again, someone reading this will say I'm full of it, but that mount is not the mount you want for Astrophotography. It CAN BE DONE, but it's done better with an equatorial mount. He later upgraded his mount to an Astro-physics which is now his mount for astrophotography.
Final thought I'll leave you with. It sounds like you have a nice budget to work with, which is nice, not a lot of people have that coming straight into the hobby. But you don't need to buy everything at once, you try stuff out if you see what seems to work and what doesn't. Check the cloudynight classifieds for second hand, or third, forth, fifth, sixth hand stuff and save $50 or $100 here or there. If you have a local astronomy club, join and attend some of their observing nights, and probably well over 90% of the people in the hobby would let you look through their eyepiece or even use it in your own scope so you can see what you think of something before you buy it. Sometimes that is bad thing when your buddy has a new expensive eyepiece that you try out, and by 4am you have an order confirmation number in hand, but I'd rather he spend his money on a new piece of equipment and borrow it for 20 minutes than to spend my money one something that doesn't feel right.
So...long answer, sorry about that, but we've all had the bug were we just want to buy it all on day 1, and probably most of us have also regretted a purchase or 2, so take it slow. You have a beautiful scope and she's going to help you explorer the universe one object at a time.
Clear skies to you