Hi there and
to IceInSpace.
It sounds like you've been doing your research, great to see. An 8" dob is perfect for a beginner, but the 10" will be better if you can move it around. Putting it on a trolley really a big deal, it's quite easy to move it around like that. The extra light gathering is just what you want - and if you decide later on astrophotography of the planets or moon, (or DSO's with a bit of adjustment), you can throw it on an EQ platform or EQ mount to get tracking.
You can get something like an Argo Navis (DSC's) to find the objects - really easy to use and will last you forever.
Keep asking questions!