Sounds like you've already made your decision, and I think it's the right one!
You're happy man! Roll with it!
Seriously, you'll top out at about 100K with Sky West, assuming the pay scale is similar to my regional.You'll loose 8 years just getting back to where you were, with no guanantee that you'll like the company or that it will even be there (I'm assuming United...). And what will you top out at at the major? 150? 200? Not to mention that the higher tax bracket will eat up most of that, leaving you with a net gain of, what, 30K/yr.? Is it really worth it?
From everything I've heard, Sky West is a great company to work for, and you're flying a cool jet (.02M faster than mine

). You got your Faith, your Family, and your Future all laid out, and it looks good. I envy you man!