I'd do double or triple coat with a strong poly. 

I ended up having G-Mac Construction (great company)  dig the outside of the basement wall down to the footing, I pushed the wall back out as far as I could using the I-beams, I cleaned the wall, I had a rubber coating sprayed on the the wall (a company recommended by G-Mac), I put in drain tile and G-Mac back-filled with sand then dirt.

The trick to keeping the coating intact is not to use ammonia, or bleach containing cleaners.

Sometimes a good cleanup, a pressure wash, or even a coat of paint could be the difference between a sale or not.  

Thinking that the moisture was a result of badly prepped work, we had professionals take out the floorboard, prepped the concrete, added assailant chemical and installed an epoxy coated floor about 6 weeks ago.We came back yesterday and saw bubbles in some parts of the new floor, mostly in the same spot where the wooden floor had buckled, but also in other areas where the floorboard seemed to be ok before.

In my market, you can't charge for the first coat of paint if they've been there more than 18 months.

Given that I have good credit and can pay 25% down, would a commercial lender be the most coat effective route?

I also have a detailing business doing paint correction and coatings on high end vehicles.

Oh and don't forget a good coat of sealer.

Dude, if you want to be a successful investor- grow some thicker skin and don't take everything so seriously.