I have decided not to purchase this park, but I am also now concerned about any parks I may consider in the future.

When purchasing property with a lease option and the intention of creating a sandwich lease option, or purchasing "Subject To" and agreeing to make the owners mortgage payments in both scenarios, would limited durable power of attorney get around the "Due on sale" clause and make a future closing easier?

@Aaron BitnerWelcome to BP, and congratulations on making the decision to invest in your future via real estate.I have written a few blog posts that may help you get started here on BP, and with your investing.

I’ve told them in the future to bring me a seller.

Is it possible you may want a PM Service in the future? 

You'll want to consider this in your underwriting, especially if there is a material risk of a capital call in the future.

The question is how long that will take and how much loss can you sustain.

He disagreed, wrote a detailed report and recommended action, it cleared inspections, sold fast, and was guaranteed against future movement for $14,000 less than the other companies said. 

Lastly, I expect my mother will need significant care in the future and I don't want her financially destroyed.

Does failure count as experience" -Absolutely, as long as you learn from the failure and apply that knowledge to future endeavors.