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The 85/2.8's a real gem on the NEX-7. I use it on the LA-EA1 adapter all the time (I don't really use AF, so I don't need the LA-EA2 for better performance).
Personally my current everyday kit is the ZA E 24/1.8, either the Sony DT 50/1.8 SAM or a Nikkor 50/1.8 AI (the longnose version) and the Sony 85/2.8, I had the 50/1.8 OSS but didn't like the rendering. It's a superb lens otherwise, but too Leica for me, I found I preferred the rendering of the otherwise inferior DT 50/1.8 SAM, at least until I can swing another Zeiss 50.
As to a flash, go for the FVL-20AM, it's small, inexpensive, reasonably powerful for its size and can command wirelessly.