Don't take any offer from anyone until you know how much the property is worth.It may be worth it to spend $500 to get an appraisal on the property so you know how much it is worth.Unfortunately, in your post, you appear not an expert in real estate and mentioning wanting to sell.

See IRS publication 544, 523, FIRPTA withholding, form 5472,  ... read what the IRS says on their website and deeply understand today's rules.Tax laws change and you need a REAL TAX expert which I am not an expert at taxes. 

We set unit economic targets that required us to stay within plus or minus 200 basis points in breakeven…Now that begs the question, what is a market maker?

Accounting is definitely one I would find an expert to do.

@Josh PrihodaAs @Natalie Kolodij said, you can reach out to any of the 20+ tax experts answering questions on this forum.

Texas is a big state with varying degrees of economics.

$1B renewable energy project expected to create 700 jobs in Caldwell, Hays countiesUndisclosed incentives approved for solar, battery facilities south of AustinMore jobs and economic expansion announced south of Austin, TX.  

You are young, explore different interests until you find what you like then become an expert in that field. 

This you need an experienced lender expert to review all your income, assets and the note on the second.

Ive heard good things about Comfort Experts