Trevor, what a great project. The time + finances are two of the most common hurdles I hear from other project creators experiencing. Do have any fellow veteran friends who might have interest in joining you in this endeavor? Sometimes having a core team of even 2 can help balance out the costs and the time (though it's not for everyone!)
I think either way, this vision is going to come to fruition in it's own time and I'm excited to see where it takes you! I know a fabricator (mostly metal work, some wood, etc.) in Brooklyn who works and lives on a school bus, if you need a connection to that world at all for advice, idea bouncing, etc.