I've budgeted for converting the half bath to a full bath.The drywall contractor that I am 99% sure that I am going with has quoted me $2660 to tear down the paneling and to install drywall. $2140 to install thinner drywall over the panels.

I just installed some Armstrong brand vinyl planks from Lowes.

Those that come to mind immediately are the liability in transportation (house falls off and kills 20 people), installation (house does not sit well on new foundation), sales (new buyers squirm at fact that house was previously on a truck bed), title (I'm sorry... the house is WHERE now???)

One winter, I watched contractors remove vinyl siding and install stone face on a house.

I like the way it looks, but it requires a minimum moisture content in the air, which I don't have out here in the desert, so I've never installed it.I can't think of any reason a buyer would object to it, other than the obvious one that they have their heart set on red cherry floors (which is a problem with any and every flooring you use)I don't think bambeoo is any cheaper than other wood flooring, so you chose it because you like the way it looks.

If this is the case, I'd install a new "Ball valve".All of the other posts are great ideas, too.Good Luck!

Allowable Repairs or Renovations Funds can be used for any repairs or renovations that are permanently affixed and add value to the property.Allowable repairs or renovations include, but are not limited to: Installation of an “in-ground” swimming pool Outdoor living areas are also eligible along with the pool installationSubject property cannot be an unfinished model home or unfinished new construction.Kitchen appliances (i.e. cooktop/ovens/stove/refrigerator/dishwasher) may be included only as built-in fixtures (attached to property - cannot be removed) in connection with a total kitchen renovation that includes new cabinetry and countertops.

I install mold resistent  drywall on the ceiling as well. 

That being said, the two options that I'm aware of are to do owner financing which would allow you to pay taxes based on an installment sale (you do not get all of your money out right away, but only pay taxes on what you get out and still pay all the taxes) or to live in the property for 2+ years before sale.Here is a thread with a lot more information about the installment sale option: https://www.biggerpockets.com/forums/51/topics/142582-tax-implications-of-seller-financing-via-note

Assuming it is high, I will install a radon mitigation system as I believe it is the right thing to do...I wouldn't want to live in a house with high radon with my family.