So, you have 1000hrs part 121 SIC flying a dash 8 from 21 years ago and haven’t flown fixed wing in 5 years and you’re shooting for a direct entry captain position?

Your lack of currency puts you at significant risk for a training failure and termination going that route. Hopefully an airline recruiter would have enough sense to tell you “no”, but some of the places are pretty desperate.

Even going to a place with displaced upgrades (and Envoy only recently made that a thing) you’d at least go through the FO training and regaining currency and flying the line a bit and re-learning all the stuff that’s changed in the last 21 years since your previous airline stint before you’re in a position where you HAVE to upgrade. Chances are you’ll be ready in under 12 months but going into a DEC program cold, your probably going to be biting off more than you can chew.

A training failure is not going to help you get to SWA.

One thing that would help you is a 737NG type rating if you’ve got the time and disposable income to get one since it and the 4 year college degree are the largest points grabber on the swa app.