Hi Mike,
I've got an 8" Dob too, and am also enjoying it. I found my first spiral galaxy the other day, NGC 4945 in Centaurus. One of the experienced guys on the forum told me that it is one of the brighter galaxies to see so maybe it might be a good one to try.
I'm way down south in Tassie though, so some of the more experienced people on here will be able to tell you what might be easier up your way.
Have fun
Kind regards
Ant