If money is an issue for getting more properties, then find partners, or the seller finance thing, or start a pool for the down payment and go thru asset based lenders (that's my next play)...Having said that, as of Dec 1, I'll be managing my own STR since I'm firing my property manager.

I'm open to a plethora of positions so long as it is remote or not office based.

After spending the 80k minus the closing costs on the rehab, go to the lender with pictures of work completed and paid invoices to get a draw for the amount of money you have used so far for the rehab.

Along with this, would the return metrics like ROI and IRR be based solely on the overall equity invested in the project, or would it be based on the minimum investment or each exact amount invested? 

Having in count that I am planning to buy a commercial multifamily apartments, that the debt is base on the property and not on me, right?

Consider your options, weigh the good and bad, and make a move based on your own situation.

The only experience in real estate is the investor relations representative who had 20 single family units (note this information is based on the website of the sponsor).

I can flex the rent based on bookings and area demand.

Work on setting your min/base/max first and then go into the customs for tht property and get your nightly mins etc set.

The cost is quite high considering your scenario, however, that's based on a shorter rate lock period.