When you get the wholesale buyer, you should require they put up an equal or higher deposit.

Are there any ways to find out the mortgage balances on a property, other than physically going to the courthouse?

Some states require you to store it for 30 days. 

It simply requires that you move out within three days after being served the notice.

That's what I would use in MD, BUT not sure if there are specific requirements in Oklahoma City.

It's 10% of income the tenant pays, I believe, so they should meet your income requirement by virtue of holding the voucher. 

Here is my understanding... the underwriter was a hard money lender who required the house to be put into an LLC initially so that he could use the estimated "rental" income as the way to get approved for the loan.

Some parks require older ones to be moved when they sell.6 - Is it a family or senior park?

If it's a primary residence (house-hack) you can go as low as 3.5-5% down but these loans typically require the residence to be in a decent condition.

Similar to signing a listing agreement before listing a house for sale with an agent, a buyer representation agreement is now required when working with a buyer's agent.2.