Just remember you need 250 airplane PIC hours for a rATP/ATP. I did the transition from the army helo side with zero mil fw hours. Paid for my fw private add on and used the GI bill for other fw ratings, and owned a plane for a few years while I was in my final year or two in the army flying for fun and building fw pic time. That said, regionals pay a lot more now than when I switched mil to airlines 3 years ago. And your stint would likely be short in this environment. Can you afford the ratings/PIC time building required? Can you afford $60-$70k first year with whatever transition leave you have built up? If you can, you will make more money long term with a higher long term QOL (probably) going to the airlines sooner rather than later. Throw in a guard/reserve job for a safety net/supplemental money making opportunity and you can help it out even more. Good luck.

I spent a year and a half at a bottom feeder regional, went to JetBlue, and in year 2 jetblue pay I am making as much as I did as an O3 in the army, but with higher healthcare costs, higher amount of taxable income (no BAH, COLA etc that wasn't taxed). Year 3 and beyond will all be considerably more. And the last 8 years of your airline career that you'd have if you switched now vs when you retire will be the highest paying years you'll have with the most time off. And you'd miss the front/middle of the retirement wave. Giving that up for 8 years of O4-O5 pay/retirement ain't worth it by the numbers. But if you enjoy what you do, enjoy the job security, then there's something to be said for that.