Personal lesson I learned when transitioning off megacorp insurance to ACA--there's a minimum yearly income you must have if you wish to avoid Medicaid particularly with your kids. When enrolling in an ACA plan (my state uses the healthcare.gov), it gives you no warning, and when you hit submit, your application is immediately forwarded to your state's Medicaid office.
Justin at RootOfGood dot com has some blog posts of his experience in NC. Seattlecyclone dot com has similar posts about his experience in WA. Not making a judgement about Medicaid vs CHIP vs ACA, but wanted you to aware before hitting submit on an ACA application and end up surprised like I was.
If you do target an ACA plan, Cost Sharing Reductions for Silver plans are something to look at. Our personal situation makes it difficult to hit the relatively narrow income band that qualifies, but CSR can drastically reduce your healthcare costs.
Like you, we have 4 kids. I had two "sabbaticals", one in my early thirties and one in my early forties before finally going on "permanent sabbatical" three years ago. DS2 will occasionally ask if I am going to "fail" this third attempt LOL! In the first 2 "sabbaticals", it was entertaining to me so see the frightened/shocked look on people's faces when they found out I was unemployed and didn't seem to have a care in the world about my situation.
At the beginning of my current "permanent sabbatical", we moved several hundred miles to be closer to family and a couple of hours away from the nearest mega-metropolis. My new friends/neighbors/colleagues initially accepted that neither DW nor I w*rk, but would constantly offer words of encouragement along the lines of "something will come along soon." I just let it go, said thanks, and asked them about their careers. People looooove talking about themselves and are so busy talking they rarely bother to ask again. As a plus, in our new location, my kids that are still in public schools are not exposed to the "keeping up with the Joneses" nonsense prevalent in previous mega-metropolis suburbia schools they attended.
IMHO, once you have "won" the financial game (it seems you have even nicely run up the score from your initial post), it is now a mental game for your and your spouse. I worked long hours and/or traveled extensively with my j*bs. It can be a big change being around your spouse most waking hours. I know I have crossed the lines when DW says, "You need to think about going back to w*rk." Straightens me out everytime!