When you draw from the equity, you are "borrowing" it from the bank and have to pay interest.If you borrow against the equity at 7% interest and then loan it out at 15% interest, you are earning a positive 8%. 

It’s paid off, I would “like” to leave it that way & maximize the cash flow while paying down the heloc between the rental & other income.  

After fully renovating both units, I refinanced to pay off the loan and held it as a long-term rental.

Who pays when the resident breaks the agreement and quits paying? 

I’d recommend interviewing a handful of companies, asking for referrals, and making sure the team you choose has a multi-layer review process—so it's not just one person handling your books, but a team with oversight and checks & balances.And totally agree with @Markus Shobe: you get what you pay for!

Tenants should pay for that.My lease considered normal to be a few items hung using 1" nails or smaller.

Use that loan to pay the back taxes and get things under control.

You will be paying 6-10% for just having them collect rent. 

There are quite a number of things that can make utilizing an FHA loan more difficult such as more barriers during appraisal, appearance of low qualification/little cash, typically longer closing period, likely higher interest rate, and PMI cannot be dropped without a refinance if 3.5% down.That said, just chain 5% down conventional loans, and make sure your duplexes pay for themselves.  

I would focus on the house hack and not take a pay cut.