I will only live in one of the units 4 out of the 12 months of the year because the other 8 months I will be with the Angels organization, during that period they provide a place for me to live and also food, so during those 8 months I would have more money I could save up and use in my house hack.

You will have a difficult time selling the park with the house attached down the road even after you fill it up and improve the CAP.And a second word of caution since I am sitting here spewing advice... those two vacant TOH homes depending on condition and the 6 vacant spaces should have zero value in establishing the park's value. 

https://www.biggerpockets.com/blog/what-documents-do-you-nee...BRRRR Loans: What Are the Options, and How Do DSCR Loans Stack Up?

I tried using this sites "Find a Lender" form, but it stopped me from moving fwd once I didn't meet the 20% down criteria.Scenario: Bank Owned property at auctionSales price/offer/bid: $270kRehab: $85kARV: $500kAm I barking up the wrong tree going down this path?

Just for context, I am single and make about $75K a year with around $100K saved up in the bank.

Sometimes things pop up after tenant move in that were not evident before, so stuff happens.... but your list is pretty long to have missed all of that. 

(Finally yes if timed right you can skip up to two mortgage payments)  Feel free to reach out with questions or if you feel we might be able to help.

Interest rates are in the 6-7% range... so it doesn't take a rocket scientist to figure out if you are increasing your loan amount by ~$50k, and at a higher interest rate,  your payment has to go up or your terms have to extend.  

Your plan probably works fine in an up market - but we never know where we are heading.    

My research has turned up a rural area with a decent rental market where 68% own and 32% rent.