We've never used hard money or personal loans before, but do have 2 cash-flowing rentals and a primary.

At closing the deal will be funded, the mortgage will be subsequently recorded in 1st position, and you'e off and running. 

The 'right' AirBNB mortgage and mortgage lender can often be the difference in making a deal incentivizing enough to invest now.The first step to qualifying for any mortgage boils down to: Cash, Credit & Collateral.

If this tenant doesn't move out, I risk postponing the close date, and losing money on the mortgage every month this situation drags on.

If the property goes unrented or is rented but the tenant doesn't pay can you cover the mortgage, eviction cost, renovation cost and holding cost during that process and pay your bills?

It all comes down to personal preference. 

Better to pay your mortgage instead of someone else's. 

Whenever you get ready for financing give me a call i'm a veteran and mortgage broker i'd love to asssist you.

Right now the mortgage rates I'm being quoted for a 20% down DSCR is 7.75%. 

But if it's priced a little high or the listing is a little funky there might be a way to get them to look at your offer.You might offer your price as cash plus a small second mortgage to them as owner financing.