From what you laid out, a bank statement loan might be your best bet.

Yes I've found I'm in this funny spot where I'm too big to string together a few softwares, but not big enough for an AppFolio or very robust platform.

Lending: You bet.

Then, once the other side of the unit is ready to go, I would use platforms like Airbnb to rent out monthly to traveling healthcare workers, etc.

HELOCs are variable rates and it's highly likely that they'll actually be LOWER in the near future, why not bet on that?

Realize that they charge a static fee of roughly $650 plus a per-lead fee and offer no support to resolve or fix any marketing issues that are caused by the platform.

@Dennis Carter IINot an attorney but I do not see why title insurance would cover this as there was no written agreement that was missed it was verbal - there was nothing they missed.Sounds like your best bet is to drill your own well.

If your debt is student loans at 6-8% interest your best bet is to pay them down/off as fast as possible as most investments will achieve a similar result but that is gross (before taxes) not net.  

I recently attended a seminar hosted by TaxLienCode and wondered whether anyone has found their course and platform (monthly subscription) valuable?

Betting on appreciation for the recapture of initial funds in this market with a refi may put you negative cash flow.