If you think you might get kicked out then housing security might be worth upping the payment. 

Or even missing out on securing a better deal, higher price, or greater return but did not do so, often due to a lack of negotiation or oversight.

If they don't you personal financial situation plays a bigger part in securing a loan. 

My strategy has been to grow aggressively (by using as little of my own money as possible) to secure good assets, and once stabilized, then work to pay down loans to own them free and clear sooner rather than later. 

I sourced the property off market and secured seller financing, and I also self manage it as an Airbnb host with nothing but 5 star reviews.

We had to wait out the First Look period, but once that passed, we secured the property below market value.

My main concern is whether it's hard to meet their criteria for properties and secure funding.

Seller Financing I am the buyer with 30 days to purchase the property and want to simultaneously market it as rent-to-own,  how can I structure the process effectively:Can I structure the deal this way, so I can secure a tenant-buyer while working to close on the home myself,  minimizing my risk and creating a win-win situation.

Also, what’s been your biggest challenge when it comes to securing the funds you need?

That's how security issues gets fixed.