It let us drop our interest rate and free up loan slots as well.  

The mailbox is one of those where you just put it in a slot so it was never marked vacant.

lol  Again, IF no attic in that space, You could still install the Ridge Vent itself on top of that 12ft peak area, just not cutting out the decking there (not cut slot under the vent!).

While all 8 slots are currently filled, one of the selected individual may not be be able to attend. 

I'd like to get other people's opinions but here's what I was thinking on pros and cons.pros: low down-payment, high leverage effectively a hedge against inflation, use up unique fha loan slot, get a second rental, I can get capital gains by building/buying for 5% less than market value. 

If you don’t include utilities in the rent, then do you still need to add a value into those slots ?

This is pretty much what most people do, they use their one and only 2nd home slot for their first STR, then you are stuck with investment loans thereafter. 

I use my extra website slots as testing grounds primarily.

I am going to turn it to gaming parlor and using the slot revenues to generate revenues to achieve the other options I wanted to do in the building.

Either to "free up slots" or take on new loans, private or commercial lending are viable options.