Can any ACC pilots shed some insight on QOL, current bases, hiring and salary for interested FO candidate?

If you can, go to a regional instead.

What SD3FR8DOG said, but to answer your question...

Current bases and salary are listed on APC. Take a long, hard look at them because some of them aren't garden spots and they typically go fairly junior. Most junior base right now in San Juan, but some of the Louisville routes have gone to new hires. San Juan does a variety of flying, mostly during the day. There's a bid system down there where you bid individual routes, some guys get four or five days off in a row. Louisville routes flying Monday night to Saturday morning. As a Louisville FO, theres really no time off except the weekends. You fly five nights a week. QOL sucks in the Louisville system, I wish I stayed in San Juan, but you'll fly more in Louisville. 65-75 hours a months vs 40 a month in San Juan.

Good experience, great pilot group, the Shorts is a fun bird to fly, but get your hours and get out.

How does the CAE flying compare to Louisville for Captains?

Super easy flying especially being 3 weeks on/1 week off. Like 18-20 hours of flying a month. Super senior though and the captains there are lifers.