There really isn't anything that's switch on and go. Every go-to scope will need a star alignment. Conventional dobsonians are point and shoot while the go-to dobs will need a star alignment but can still be used without the electronics. I have a nexstar 8se and aligning the thing and getting it to work properly has been nothing but a source of frustration, not to mention how ridiculously fast it dews up. Haven't used it in over a year. I like the idea of a more compact tube but SCT's aren't my cup of tea, expensive lesson.
Yeah, I wouldn't rely too much on the Go-To functions. I've only ever gotten them to be "close enough" but I always found it easier to just get on target the rest of the way myself than trying to figure out how to get Go-to to be precise.
8" dob can be a very good choice. Depending on the type of vehicle though it can be a bit awkwardly shaped to transport. I had a smaller sedan back then and my 8" OTA would be on the back seat but I could never get the mount in the trunk without pulling it apart. Hatchbacks/SUVs wouldn't have this kind of a problem.
bjulihn mentioned the idea of EAA and I think it's an interesting alternative to going big (or a way to augment any size scope you currently have). It helps a small rig punch above its weight class in less than ideal conditions compared to strictly visual. It doesn't involve that much more gear either. It can be done with manually tracked dobs but a tracking Az/EQ will make it a bit easier.
Edit: oh I missed the part where you said you won't be using a camera. Nevermind the last bit I said.
Edited by NightOwl07, 28 September 2020 - 07:35 PM.