With neither party being alive it took a while to short out with heirs.

These are two very different and separate loans (completely independent of each other, I think it is safe to say), with entirely different parties and collateral.The unit owner's mortgage, originated prior to 2017, with a current balance of $800,000, I would think, should be totally exempt from the $750,000 limit. 

Escrow is a neutral party that holds funds so opening escrow as soon as the contract is signed is normal and sometimes done before a property is under contract.

With neither party being alive it took a while to short out with heirs.

Recently I sent out 30 flyers to local tenants that I would like to have in my space and I ended up getting a couple of interested parties. 

10% also is super low for something like this...Also NO you do not wire to a person you always go through a third party title and escrow person.

I attribute this to a lack of understanding of litigation, the claim participants and objectives of the parties (particularly the plaintiff's attorney and insurance carriers). 

Most banks hire 3rd party asset management companies handle the sale, so if you call the bank they will just pass you off - that will be after being tossed around from department to department for two hours. 

Well the air compressor station is always owned by a 3rd party, not the gas station.

This should be easily understood, signed by all parties, and not contradict any information in the lease.