I don't even know why I started reading this post, but I do now know that most people haven't a clue about answering your question.
I assume from reading the posts that you are/were a pilot? You worked for the DEA?
You want a job that has a regular schedule, good income and benefits to supplement your existing finances. You want to be able to see your kids grow up and be a part of their lives on a regular basis.
To start with I would seek out the best temporary placement agency and go in and take them up on their free proficiency and aptitude testing and see what they come up with. You might find that you are well suited for a job that they have that you might like. But at the very least you will find out some information about you and the job market.
Work for a small business if you want to feel valuable, have a cool boss like me and don't work for anyone who is poor, or just sqeaking by. If the boss isn't making money you can bet the employees aren't gonna either. Work for someone who is successful. Real Estate is boring, but it is surely pretty steady, requires little training and pays well. I just don't have the knack of working with the public.
You could start a business, but that is risky, expensive and has a less than 10% survival rate for 5 years. Not my kind of odds.
Good luck in your search, I know it is hard to change careers, especially with the prospect of a family in your future.