for doing BB and SF. u usually can check out shoryuken.com (mostly SF) or dustloop.com (BB) and maybe astralheat.com (recent forum dedicated to BB)
The community base for those games vary (i do not know because i recently moved up here)
for setups, i would ask this, how many ps3 and 360 systems does the place have? plus u have to take into consideration the playerbase of which players play more on what system (miami for example, the players there own 360's more than ps3, so tournaments are mostly catered to 360). my guess for orlando would be 360, but don't be afraid to run both systems, just try to accommodate players needs. some players may have one system or another, others have controllers supported for both systems (arcade joysticks). the only tournies that happen for SF are ranbats (rank battles) at Will's pub. BB there isn't many around except for florida gaming back in early august
systems i would say it varies on the amount of players who show up, but match sets are super fast compared to brawl.
feel free to shoot me a message on AIM or send these messages, I'll be glad to answer them, also, if needed i can also stop by the place and survey,