On the other hand these are also where you might find your deepest buys so it really just depends on your personal strategy and buy box, many investors are having success in these areas. 

If you are only paying a portion of the heating costs, keep in mind how much longer it will take for any updates to pay you back as opposed to a situation where you paid the entirety of those costs. 

Pull through- The front, pull as far forward aspossible, gives the person next to you an easier angle to turn into,from behind you.

If you are doing section 8, there's a good guy I know of that handles that although I don't have personal experience in this space.

There is a Bigger Pockets investor that started with some successful Airbnbs he personally manages of his own in Nashville TN & Columbus Ohio.

My question is - does the 7 feet per person equilibrium rule apply to total NRSF in the 3 mile or can that be broken down by class (cc vs non cc, facility age, etc) and the 7 rule applied as a cap to each individual class?

You would not be able to access additional cash beyond what was borrowed.The other scenario worked similarly, you can't borrow beyond the cash you paid. 

If you paid up for furnishings and experience, is the location any different than the other two?

We require renters insurance so the tenant was covered and they got paid out for nearly all of their stacks of clothes, dolls, trinkets, and everything else that was stacked about.

There are also some free options and obviously don't have many bells and whistles and will make it more challenging to switch to a paid accounting software.