People like to be critical of health insurance companies and I'm sure it is well deserved in some cases but when my daughter was in the NICU for a week after she was born the health insurance company was the most efficient and helpful part of the process. And it ended up costing me several thousand dollars less than I thought it would.
Here's the only way I could think of to make a larger plan work. Work with the existing health insurance companies to get to use their networks and their claims processing. Pay them a percentage. They may just work with you since there is no risk to them, the multi-state company is the one paying the claims.
Of course, the capital required to start an insurance company is immense. I personally would never trust my claims to a small startup.
The Guard is now getting into cyber work. I am not part of that, but you might want to check it out. The Guard has been one of the best things I've ever done. I have made great friends, and it's never really interfered with my civilian career.