No signing expensive leases that you personally guarantee typically. 

As that will at least help folks that you reach out to know that you are a real person, with a picture and professional bio.

There are areas I wouldn't personally invest that I can speak to, but there are just so many opportunities.

What is each person's role/superpower?

It is our personal house and we're in the process of moving back to the east coast (New England area) to a higher COL area.

House hacking will also give you some personal "property management" experience.

I was disappointed to see the posts from unhappy customers.

However, my personal opinion, is that its unethical to mark them up beyond what the consumer would pay normally. 

I personally would use Shane Flipping- Flipping Custom Homes. 

@Romane DaleyYou can't borrow from an IRA; the only way to access IRA funds for personal needs is to take a distribution, which would be taxable, and penalties on top for premature distributions.