(edit: the property can have up to 3 units built on it...house with attached separate apartment + unattached ADU)Of course, other people are telling me to park my cash in a high yield savings account and just chill LOL, but I'm not really comfortable with that either as an investment strategy.

I've looked into soundproofing matting to attach to the ceiling, then the Z channels and another layer of drywall, but I wondered if anyone else has dealt with this.

the panhandle of florida is booming 32408 is where I'm located.

Sue them (good luck, even if you win, will they have any assets to attached). 

Is this the right "Key" (screenshot attached). 

I have attached a spreadsheet I've created on the following cost of developing a duplex.

I am in the panhandle and invest from PC over to Pensacola, reach out if you need anything.

What Should Real Estate Investors and Landlords Know About PreJudgment Remedy Attachment?

My buyer is willing to pay a few thousand over but I fear that I will be in a difficult position if they were to back out as I wouldn't have any other buyers that would be willing to purchase this contract.The agreement that I use is attached.

Attaching an image of the island as an example (140" x 51").