bands and djs... i own most of the band equipment, 2 mics, mic stands, guitars, keyboard, 16 channel firewire mixer, electronic drums,
along with numark ns7 and laptop and odyssey case...
smaller pubs mostly
I do not have the sound credentials most here do, but if you are running an e-kit you need a subwoofer. You will get very thin sounding drums, with the kick almost inaudible, running through just 12 or 15" mains. In fact, 2 subs really, but that's out of your budget.
As this thread is so convoluted, just wanted to add that Proaudiostar has JBL PRX710's for $399 each, $438 with a cover. A pair with covers is $866. All is until they run out since it's new old stock stuff.
Since budget is very limited, 2 of these and a PRX sub should be a suitable starting point, but of course you'll be spending almost $2k (not the $350 you originally mentioned).