More times than not, it takes a few years for LTRs to show consistent cash flow depending on the model of course.

We are looking at buying a park model home and land.

Sounds like you're aiming to make some type of algorithm or software that tries to eliminate the need of competent real estate people utilizing their experience in markets they are very familiar with..........Didn't Zillow lose about $500 Million flipping houses using this exact type of model? 

@Greg ScottThe fund of fund model will start to subside as some of these deals start to have problems.

When 2 out of 11 investments go completely bad, it can't be a sustainable model for investors.Good luck,Glen

I think there could be some work done on this to model ways to put reserve money to work prudently over time. 

Padslip has that model, it is a kind of the competition for people who do house hacking :PGood Luck in your search and investment. 

If you're doing a hybrid model of STR and MTR, I would suggest just getting a STR policy. 

After having some difficulty finding qualified tenants who could afford the rent, a highly qualified tenant approached me asking to lease one of the houses using an STR arbitrage model. 

Determine your rental model -- sounds like STRs or Airbnb, right?