Belize dry season is January thru May.- Bugs/Snakes-   I'm originally from Louisiana; and Belize has far less bugs, Mosquitoes, and snakes than I ever grew up with in a Creek bottom in the middle of a National Forest.- I love nature and trees. 

Cast iron will dry out if not keep wet causing cracks.

You're absolutely right, though, it was practically the same shade as dried RedGard where it had been exposed to minimum UV exposure from the four windows in this bedroom, as it has here in the photo posted.I also met the tenant who did this -- and she would not know RedGard from Easter egg dye powder.In other places throughout the room, the paint had darkened a bit and taken on more of a purplish tone.

That well will run dry quickly too, unless I do some delayed financing tricks or something.

It impossible there fore because everything else is drying up, it may be an option going forward.

Imagine a stench of cat urine throughout the house, dried cat feces in a front room closet and on the back porch, unwashed roasting pans left in the warming drawer of the stove, etc. 

I would use a fast dry oil primer like PPG's 17-964 (http://www.ppgpaints.com/products/seal-grip-interior-premium-quick-dry-primer-sealer) to seal up the paneling.  

Zinsser makes a shellac-based primer that's awesome, sticks to everything, dries super fast, etc.  

Does everything need to be dried out before you can start? 

the value of the property, you should expect your taxes to go up as well.Adding 2 bedrooms downstairs may not be as easy as throwing up some dry wall.