You might find someone willing to help fund if you post up some details about the deal, what you're needing and what you're able to bring to the table.

Forget the P.A. and just get em to the table.

Though I don't imagine I will work to sell much, I'm just leaving too much money on the table on the buyers side not to.As for self promotion I have done a few FB and Linkedin posts but not too much of that probably due to the fact there was not much of a need.

Was it all under the table or something?

for instance if you are marketing guru you can add value to them that way.but if there is nothing you bring to the table I would strongly consider just being an intern for them. 

We just got turned down to take out a HELOC for our house because I work under the table in construction and do not have proof of funds.

The current swing has you walking into a wall and hitting a chair or table when you open the door. 

When we sell, we ensure equity is left on the table for the buyer so that there's an easier sale if they choose a future liquidation event.  

And if so, how much should I, the assignor  take at the closing table?

I explained to him that I will give him a down payment and finance the rest through him instead of a bank.His main focus was to cash out at the closing table and diversify that money to other businesses like stock and so on, but when I explained to him it could be beneficial for him, because upon our agreement I will pay him interest.