They have $750 stuck in the refund position with Airbnb and had to spend an additional $750 for another place (screenshots were sent for proof).

Grid) finds this acceptable as long as there is a written agreement in place prior to the tenant taking on the additional usage. 

So I would then return their 10k and they would have made an additional $4500 (900 times 5 years)I just want to make sure that I am understanding correctly.Also lets say they do want their 10k back in 5 years.

I am happy to say that on August 31st, 2015 I went into an 8 to 10 hour surgery and came out cancer free (the additional chemo sessions through December were as a precaution).Now, I was on a serious mission to get back on my feet financially and health-wise and was armed with a completely new way to look at life.  

I would contend to you his credit probably hasn't changed, and as you have additional deposit, this should probably carry you through to see if he intends to fulfill his side of the bargain. 

And if you ever need cash for a capex and you don’t have money sitting in your LLc  account as reserve, you just contributed money to LLc as additional contribution. 

Any additional thoughts on setting up meetings with potential lenders?

We accountants will be able to charge you for one additional tax return. :)PS.

Additional increases will be required if extensive repairs are required by the Health Department.

@Dustin Booth In addition to the ideas above, I wanted to throw it out there for you: if you cannot find another asset to 1031 into, consider a "fractional interest" as one of your 1031 choices.