My risk appetite is 80%.

@Wiley HoodYes, there're risks:1.

I’d recommend starting with business credit cards that only require a soft inquiry, so you don’t risk a denial from one bank that could influence the others.

It earns more risk-free in money markets than your mortgage rate probably. 

It can be done but each situation is specific and would be underwritten to see the risk and what the exit strategy is. thats the key with shorter term loans - understanding what the borrowers exit is.

"I mistakenly had a rental policy instead of a builder’s risk policy."

They are still a risk, and I would not rent to them.

It's not a real common concept here in DFW area, but I love it.Buyers have no downtime, no rent rate risk, lower vacancy risk, potentially instant cash flow day 1. 

These are very risk gambles that should only be attempted with money you don't really care about.  

Fears/risks: the underwriting projection seems too good which likely means very aggressive.