But anyways, I have a stretch where I’ll be gone for several months - mid July through mid October, possibly stretching to the end of the year, and I’m wondering if anyone has any ideas beyond just a normal rental - traveling nurse, etc. that might be good in Nashville. 

Overall, you're spending $25k in extra costs and a monthly pmt that's $500 higher to keep $50k in your bank account. 

We host one in Alexandria, VA every month! 

I have multiple applicants that have applied. 2 look promising but both want to wait a month to  move in.

The rehab will be completed this month.

It'll likely take a month or two assuming that the loan is with one of the large servicing companies that move at a glacial pace. 

Hey Daniel, you can use a platform like Avail that will give you all the info you need to know like:-Credit score- criminal record-eviction historyYou will also need to gather their:SSNIDPaystubs and 3 months bank statementsat least 2 past landlord references.If all the above check out, you likely have a great tenant.

I know of only one building that allows Mid-Term Rental 1 month or longer.   

lol, bro, he's been involved in an attempted murder twice in the last 6 months.

It would take around 5 years to pay off the HELOC by using some of the monthly rental income from two investment properties.