As Wayne and Harjeet said, if you do have an FHA loan outstanding and are forced to move, you would be exempt from the rule and allowed to obtain an additional FHA loan. 

In short, here is the way it would work for you:  The line of credit would be about 5X your current liquid assets. 

@James Wiltz You can try assets based lending. 

I don't want to liquidate my assets for a down payment if it's not even possible. 

I would simply knock out the $80k and have a great passive asset.

I hope that my understanding of accounting and taxes will be a helpful asset in building my experience in real estate.

This situation makes me think how so many people believed the lie the US govt told people that their home is their biggest asset Well ah yes if you want to sell and live in a lower priced house. 

If someone sued you and wins then yes your leveraged asset is vulnerable in either case.

Must include:- obtaining all licenses and permits- tear down of existing structure(s)- complete build including finishes

They are stating the reason to be that they cannot obtain financing for the original agreed purchase price because the appraisal came in low.