If dirt--you'll need to install vapor barrier (heavy plastic) and gravel over that, then possibly some type of flooring.Is it a stone/rubble foundation? 

There isn't going to be any real ventilation in the bathroom, so you should wear a paint respirator with organic vapor cartridges as you put this on.Once you've got it spot primed, break out setting-type joint compound.

My 15 year loans cash flow, but it is vapors so any serious expense will be out of pocket.

The Complete reigns supreme as the stinkmaster world champion but the fumes are so bad that even if you wear a respirator with organic vapor cartridges it will attack your eyes.If you're paying contractor prices to get this done sight unseen in KY or NC, rip out all the hardwoods, roll the Kilz Max all over the subfloor (they'll refuse to use the Complete, and probably gripe about the Max), and do the luxury vinyl plank thing.

Hopefully the price included a vapor barrier and gravel?

Hi Deborah BurianTake a look on a website called buildingscience dot comI'll try to link to an article...no affiliation, just a good reference site:http://www.buildingscience.com/documents/digests/bsd-106-understanding-vapor-barriersI'd say if that wall doesn't have it, none of them do.

You can colleague me if you want to post that privately.The reason I ask is even if you land a loan at 75% ltv and the lender allows a seller second of 15% you will need 10% 200,000 to do this deal.Actually it will be more as title,survey,appraisal,phase 1 ,site inspection,vapor intrusion survey,and additional lender fees will be in the tens of thousands of dollars to close this out.

Electrical/plumbing/shower cement board & vapor barrier.....

If you are I would consider putting down a vapor barrier first, along with a sub floor like Dricore or some other dimple board to keep the flooring directly off the concrete.  

Inventory is very low and properties vaporize!