I told one of the tenants by phone  and email on April 30 I would reimburse her part of the floor replacement cost ($300) as a compromise if she pays all of the April rent by the 10 day notice deadline (May 6) and the May rent by May 30. 

It actually turned out they had genuine issues with their bank accounts being compromised.

If he questions the fact that he did not receive his year long longevity fee back I would likely compromise with him at that point.

We couldn't reach a compromise, so finally I made the difficult decision to sell the place and give them 100% of the proceeds back.

These carve-outs are typical in commercial real estate loans, including those backed by Freddie Mac, and are designed to protect the lender without necessarily compromising the loan's non-recourse status under IRA rules. 

They will scrutinize your material, layout, and contractors. 2nd, if any layout deviates from the original plan, you have to find a structural engineer to prove to them the change won’t compromise the structural integrity of the building. 3rd, your finished materials especially flooring must meet their sound proof standards.

Hopefully they will be willing to work out some sort of compromise or maybe you bring in one more partner to bring the deal back to good standing.

Maybe there is a compromise.

I would definitely go with a "one-trip" container and one with a higher head height; but if you don't live near a port, you will probably pay more to get a "clean" container.You need to consider that every time you cut a hole in the side, you compromise some of its structural integrity and you'll need a structural engineer to certify your plans.  

Tearing up and paving the woods and grasslands compromises the natural systems that rapidly return water to the atmosphere, increasing the likelihood of future floods for miles around.