Side Note: there are only a select few cities in the Denver Metro Area that allow non-owner occupied STRs.On the other hand, just flipping by it self is more of a job imo.

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

When you do the actual work that allows investors (not just me) to evaluate a property you get to the top of the list and you get calls and you get deals. 

Don't be afraid to ask for things and allow the other side to make offers.

or Nevada or Arizona, maybe, if that allows your to go to your projects in person.there's no such position as "BRRRR COO" that works for you - that's you until you get a team or business set up.

Here in Colorado, one of the diminishing number of areas to allow investment Airbnb properties is Park County -- close to Denver on the eastern side and close to Breckenridge on the western side.

Then decide on what coverage you want and at what limits/deductible. 

The IRS wants to know about any money coming in, but he can also deduct some costs of renting it out.If the time comes to sell the house, whether or not he has to pay capital gains tax depends on how long he ends up living there when he's back.

it will allow you to test the market a bit to see what the options are. 

Another option is to get an interest only loan, which reduces the payment amount and thus allows for more cashflow.