ok, heres the score. I own a 120watt amp. The guitarists have a 30Watt and 40Watt amp. The singer might be able to get a loan of a 100Watt p.a. The question is... 1: can all of us run our guitars though our own amps then through the p.a.? 2: the hall we're playing in is about the size of 1 and a half basketball courts. What size of p.a. do we need if our own amps are too small for a room that big? please, treat me like a complete idiot because when it comes to all this kinda stuff i really am. I dont have the slightest clue about how to set up a gig or how powerful everything should be, so treat me like a 5 year old and run through everything very very carefully as if i know nothing at all. Thanx.