@Scott TrenchI think there are a couple reasons assumable loans aren't more popular.

This has been a popular group for a very long time.

The homes are reasonably priced for the size and bones, allowing investors to customize homes with renovation or interior design prior to being able to attract guests at the right price.

This will vary property by property and area by area, but in area not only do you have all the city/county level planning: access, traffic counts, density requirements, unit counts for school districts, sewer capacity, etc, but you also have neighborhood councils which will have additional level of say in final design, scale, unit counts, uses, etc.  

There are clear affluent areas and forgotten areas of Janesville, but I will always stand by my opinion of tenant screening being the best defense of your rental property value.The Northeast side is, by popular opinion, one of the best areas to be in for newer duplexes and larger lots (for more money, of course) - take a drive down the side streets off of Wright to get an idea.The homes here are at a premium price, and rents are higher, but we've found the ROI is too low to start out in that area. 

For better or worse, this feature is one of the ways that make DSCR Loans popular with investors since the qualification metrics are typically easier than other options4.

You mention you have no experience in these types of parks and your first deal you want to take down 100.When I was working for a GC we did a condo project for a developer who never developed a building before and he sold his company (it company) and used the entire amount to develop real estate.He ended going bankrupt because his inexperience with his experience and his designers and every mistake they made was multiplied by 150 since that is how many units there were.

Because new designs of rings will attract a lot of customers.

Midwest is the popular place for that. 

Mitch - A Good Strategy however; Can an ENTITY (your corporation) be designated as AIF - Attorney in Fact for INDIVIDUAL borrowers who's loan is being paid off?