Oliver,
Watch that video that Adam posted about the CFI that quit the airlines.
https://airlinepilot.life/t/waaaaa-i-was-only-going-to-make-50k-my-second-year/16163
That should give you a good idea of what regional airline life is like 
kidding…that guy just wants to get famous from his channel. He talks about his experience as though he was planning on quitting from day 1. Everyone knows that dues have to be paid in the beginning.
Anyway, you already mentioned most of the other positives about being a senior captain at a regional. You can see the pay rates yourself if you visit airlinepilotcentral.com. There’s a pay calculator at the bottom of every airline’s page. I don’t think you’ll reach 6 figures but you could reach $80-90k during your last few years at a captain. Being a check airman might bump you up to $100k.
Tory