If they don't come (or all don't pay), you lose.

@Kevin S, you are correct and my original post may have been a bit strongly worded to suggest you can’t versus, you should strongly consider the alternatives prior.The CARES act does in fact provide penalty-free access to some or all of your IRA funds so long as you meet the exception criteria.

Sending a demand letter is a good move as that usually gives them a few days to close or all bets are off.

At some point I was hoping to move some or all of them into apartment complexes via a 1031 exchange.

If the answer to most or all of those is "no", then I wouldn't be surprised if you will find them too tight-fisted to get a regular mortgage from.

Also, do we place any or all of our properties under any type of legal exposure if we use the top level public name in our dealings with businesses and tenants?

A hard money lender is probably going to want 25% down but may cover most or all of the renovation costs.

You could do any or all of the following over the next few months:-call a bunch of different lenders and find out how much financing you qualify for.  

Many investors in Jax use Michelle Fusillo or Al Nicoletti. 

If you cannot do all 5 closing at the same time there is no point..But you got your work cut out for you because each owner knows exactly what you are doing and they want a premium over market value for their asset.Not too familiar with financing but it its all commercial or all residential I am sure you can get a bundled loan.