LOL...
Oh yeah, those downtown neighborhoods are really a buzzin'.
Rochester is a great family city but not tops for singles. It's very nice. There's a good "bar scene" for the most part, but what you'll find is a revolving group of singles if things haven't changed much in a decade.
The Park Ave. Advice is good, Corn Hill is another area to check out. I always preferred the East side of Rochester not to be confused with East Rochester the town proper. The East side, likely due to the presence of Xerox, always struck me as a little white collar. But the city and suburbs overall are a nice mix of both.
My advice, rent first and check the area out for six months if you have that option. Then you'll know a little bit better what's going on.
Recommendations: Fairport, Pittsford, Bushnell's Basin area.