You've probably already thought the following but just in case:

"A year of runway" will vary by individual. Thus part of the infrastructure for your accelerator should be a series of locations where costs are minimized. a.k.a. We know a great hacker house in Kansas, or "we've done the numbers and if you want to work out of Mexico, you still save money even if you need to fly to California once a week."

You might also consider a structure whereby participation also offers health insurance as a bunch of individuals / tiny companies buying market rate care is usually not an efficient use of capital. This will also attract a more mature crowd who (testable hypothesis warning) might be particularly good at building this kind of business.