I've been looking into Carvin sound systems, very affordable (because its factory direct), and very high quality, at least from what i hear.

alot of equipment, definitely alot of equipment.
Instruments
Amps
Mics
Mixer
Monitors
Speakers
-

What should I expect to have, and what should i expect the gig place to have?

obviously, Instruments/Amps is a gimme...