Not sure which path I'll take yet, as I'm in "absorb everything and learn thyself" mode still.

Lastly how do you decide on the rent per tenant as this model is so unique?

I have only been listed a week so I am certainly not in panic mode by any means.   

Typically in northern states the cost for natural gas is way cheaper than electricity so over the life of the system your utility bills most likely will be cheaper with gas heat.Ductless split systems use electricity to power in heating mode.

Right now, I am still in learning mode to be honest. 

.  ;(  I can only say I'm a long time reireply user, in its simplest mode. 

I had one in acquisition mode, one in remodel stage, and one that we were selling.  

But I'm still in growth mode.

If your properties are not cash flowing, you need a general rule of thumb on how many you sell per ones you keep.It is easy to be in building mode all the time, but it is not sustainable if you are not actively making income and have cash reserves.

More units means more things could go wrong.So, while I agree with Greg, that if you are in growth mode and want to get to 100 or 200 or 1,000 units (although unit count is not the best measure of success) then more debt with longer amortization is going to help you get there faster.