Get your permitting department on board first as well in your county.Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

as well as interacting until the appointment is scheduled and confirmed.

We'd appreciate any thoughts, advice, direction or well wishes!  

Prior to this, he had told me that he was going to be late on rent due to something else, well, he finally paid the full rent and late fee on July 12th, but I am not sure what should I do next.

A great contractor who knows the area may also have the answer to this as well.

I know I can acquire them, get them running well, and SBA 504 refinance them in 3 years.

We have had quite a few rental units enter the market in Grand Rapids recently as well.  

Only problem I’m having is i wouldn’t own the land it’s in a mobile home park but there are other mobile homes for rent in there as well.

Well with the power of Google behind it, it could be something.

Pros could be: Clean water + tub for each guest; on a well, so no water waste concern; can make it design-y + cute; can be used winter (hot water) + summer (cool water); goes better with forest location of the home than a traditional hot tub might; will hold same number of guests as hot tub would (2 people in each tub).In researching I have seen some people on Airbnb have these checked in amenities as 'hot tub', some 'private hot tub'.