Otherwise, just have a rock solid contract that ties the seller down and close in July.

I followed the link Account Closed posted and based on my natural pettiness would be likely to pay the $30 even though I think collection probability would be low just so when their credit is pulled there is a clear scarlet letter warning future landlords this person is a deadbeat.  

Different water heaters and furnaces, walls are often wood paneling instead of sheet rock, insulation can be an issue in colder climates, roof leaks, etc.

your numbers need to be rock solid. i would need some additional info to be able to help.

Encroachment of this nature should not impede your ability to sell in securing lending for your future buyer. 

Human nature at work.

I have this same issue right now with some tenants who, otherwise, are rock solid. 

And naturally quit my job the next day..

Instead of a cheaper natural gas furnace you are going to be paying the electric on the space heaters.

This year is going to rock!