If I rent it out and the rent monthly payment let's say covers the mortgage and HOA, the cash on cash return will be $40K(appreciation)/($ 42K (Down payment) = 95% and it will be 1.95 to find the cubit root and it is about 25% yearly return on my initial investment. 

We recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

For me as well as the seller.First, you have to define Sub to financing.Do you mean the reckless kind where you overpay for a property, take over the financing and borrow from others to cover closing costs and holding costs when you have no money, no credit, no income, no reserves and can't tell a warranty deed from a deed of trust and you close on the kitchen counteror do you meanbuying below market value, already having a nice income, having reserves, using escrow and title, already understanding the due on sale clause, have done a lot of creative purchases and know when to use and when not to use creative finance and how to recover if something goes amiss?

Hostfully seems like it will cover the basics we need, plus it has some unique features that others didn’t offer.

And, voilà, you have your own guide.Problem is what they'll likely want to know will probably be basic and already covered by those guides.

IF you plan on going back someday, and this is the home you want to move back to, then renting it would be a good idea as long as you estimate that it will cover itself, or preferably, cash flow, which it appears that yours will at @ $2K or so per month (after expenses). 

Sorry if this has been covered before, we are located in Minnesota if that matters.   

We recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

I only have enough funds for a 20-25% downpayment and was looking to do a DSCR loan to cover the rest.

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.