Would anyone have any recs on location banks, credit unions, etc that would look at a deal like this?

You should be able to shop local lenders and credit unions and get a much lower amount of cash out of pocket while still achieving your goal of 75% or even 80% LTV on a commercial note.

I write and share a lot about my experience, the market there, and even openly share performance history and numbers on my own rental portfolio.Happy to send you and anyone else those resources.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Mortgage application activity has already seen a bump as primary mortgage rates are nearing twenty month lows around 6%, FHA in the very low 5%'s (and I've even heard of 4.875%'s floating around..) with DSCR rates now in the low to mid 6%'s depending on credit profile. 

Verifying last 2 years of rental history very important!

so thats the history of how turnkey started they were all BRRRs  lets talk about how it works today.Today the companies I fund are Turnkey providers who again hook up with turn key marketing companies we pretty much know who those marketing companies are.

I'd consider tenant history as well.

You might also want to consider a credit repair strategy to strengthen your application.

This would be specifically for a property that doesn't have previous rental history.