I HAAATE WHOLESALING with a passion... so I would have no incentive to write my story here.. other than I am allergic to ignorance.So this is concrete validation that the previous statement of the poster somewhere up there is just wrong.Will everyone make money?

And then filled with 6 inches of stone , then concrete with rebar .

My contractor was going to install the vinyl plank flooring, but called today to let me know that there was water sitting on the concrete sub-floor. 

If your basement freezes consider insulation for the box sills (the area where the frameing sits on the concrete our block wall) - spray foam is usually the best as it will create an air tight seal and as a nice side benefit it also keeps bugs and spiders out.

Since its a gut rehab down to the studs, it requires new plumbing, electric, some new framing, roof, floors, windows, doors, paint, trim, insulation, drywall, recessed lights, kitchen, 2 small decks, garage door, porch repair, re-concreting driveway, landscaping front yard and back yard (very small lot 2,200 sq ft).

Complete new kitchen with concrete counter tops and appliances.

If a wrap is being used, and the existing underlying note is not assumable, then the note holder can accelerate the note at any time, demanding a payoff in full in a time period compliant with the laws of the state the property is located in.Many states, like Texas have state forms in which the blanks can be filled in to be used for an offer on residential property.

BTW, the BOCA codes (Nothing to do with the city in FL) will require electric outlets with special breakers on the new bedroom wall--both sides-- so to be compliant, you need to know what is required.Perhaps you can do an interior division yourself, however adding electrical outlets in a bedroom (or anywhere) in a rental, IMHO, should be done by licensed electrician (or at least inspected by one with a sign-off on the work).

What would you prefer - polished concrete or epoxy flooring?

You've already taken the first steps down a long and fulfilling journey.Read some really concrete 'action step' books like The ONE Thing by Gary Keller.