I'm a GC as well and did the math, the Heloc would save considerable interest because it would average on 33% of the balance borrowed at any one time (and thats assuming constant deal flow).  

I just can't accept such a constant ever increasing loss, even if I can afford it. 

I own a few rentals near the Memphis international airport.

Florida scares me with insurance issues and constant threat of hurricane damage.

It freezes constantly.  

Quote from @Patrick McCann: Hi Justin, I'm also a househacker in NH currently living in my duplex in Dover, NH with plans to search for my next one in the near future.

I would only add these two: FIRST - people constantly ask which algorithm to use to get their prices set.

Remember, no system is perfect, so avoid the temptation of constantly chasing after the next shiny object.

Purchase price: $900,000 Cash invested: $15,000 6BB/3.5Bath 4000sf on 3.4 acres near several wedding venues.

I'm glad to see you're both nearing the finish line.