You were originally asking about rack mounted kit. This is where I have gone recently and I’m here on account of getting serious about recording.

I spent a lot of years carrying bits of PA systems up and down stairways into strange and smelly back rooms of bars, loosing skin, sobriety and sanity in the process. Stay as simple (and as light) as possible you wont regret it !
Id look at the fender passport PAs seriously as in my experience you only want to mike the vocals.
I really wouldn’t worry about miking drums / bass or guitars as a 100 w guitar & 100 w Bass amp is more than enough in a small bar. By the time you are playing venues where miking guitars and drums becomes necessary, the venue will have its own PA and sound person who will do all that for you.

If you are gigging a lot (every other weekend) durability is an issue. It can be done with rack mounted kit but a compact effect floor board is much more convenient and doesn’t hurt your arms as much as a bloody big armor plated rack.

So ….yes ….sorry about that just got carried away into yesteryear ! Rack gear !
I use a pod pro (!) which forms the corner stone of my sound. I also have an ART mic pre amp. Mics like the SM57 and SM58 have a low impedance output which means that they will sound horrible / not work if you try to stick them into a hi impedance in put (like a guitar amp) hence the preamp. The preamp also delivered a wicked tone for my California strat, (very twangy …if you like that sort of thing). Both of these beasts go up to a patch bay as the next 4 rack spaces contain a Midiverb 4, (effects unit great for vocals limited for guitar however between it and the pod I can get more or less what I want)a flippin huge EQ (also ART) a noise gate (Behringer) and a compressor (Behringer). The last two are really for cleaning up sound. The noise gate will get rid of any unwanted hum whilst an instrument is not actually playing and the compressor is for vocals (hides my doggy mic technique) and bass guitar as it boosts lows and cuts highs....wow that was quite anatomical.
With this little ensemble I an set to go with quite a home studio !
Hope this is useful