So I've got an ASI533MC Pro and GT71 apo but my computerized go to mount will take another month to arrive. I can get a manual mount in a few days, so I was wondering if I could capture dso with this setup because its winter and I really want to utilize these long nights.
I also want to know which software to use for stacking and editing, I have Microsoft ICE(image composite editor) but I don't know if it works well for astrophotography.
Siril is free software that does stacking, and after it has stacked the subs, it can process the RESULTS file.
Siril is good. many tutorials on you tube.
on a static mount (tripod) you will need to take very short sub exposures, as the stars move and your static tripod does not.
try 3 seconds and if you are not getting star trails go longer. if you are getting star trails then go shorter.
I used to shoot static off a ladder tripod, with a DSLR and a stock lens, when I started, and while it is by no means optimal, I DID get images and I DID learn stuff, so I suggest you give it a try and learn stuff too. 
don't be afraid to experiment in this hobby, and try any idea that you might have, you can only learn from doing this.
using the Ladder tripod and my existing 6 mega pixel, 20 plus year old camera, and a zoom lens, I got shots like this.
now quite obviously it is nothing spectacular, but I did learn about star trails, and exposure times, and ISO values, and Stacking.
so I think just have a go and start the journey. a few months later I was getting shots like this.
and on another lucky night shots like this.
and the moon is a good target for short subs. I shoot the moon at about 1/1000th of a second roughly.
best wishes Spaceman