First off, congrats on your 3rd gig going well.
I think you'll need to figure out what kind of venues you'll be playing, large, small, loud, soft, or a combo of all types.
The most versatile piece of equipment you can buy is a small PA system. If it's a small venue, bring just the mixer and 1 cabinet. Bigger, place, bring 2 cabs.
I personally love using my Fishman Artist acoustic amp for small gigs, restuarants, parties. It's not very imposing looking but is loud enough., if need be and sounds really good. There are many really good acoustic amps (mini PA's) like Fishman, Ultrasound, Roland, Marshall, depends on what you want/need it to be. If it is a bigger place with it's own PA your amp can be used as a monitor and run into the PA. Good luck.
jricc
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