I'm local to the area and am aware of the legality as it differs from town to town.

This will help to minimize legal liability and any concerns that could arise regarding employee theft (We plan to retroactively count the RV rooftops present at noon each recorded day (every 30 days), and compare it to the park management software/bank statements as a system of checks and balances.

How much in legal fees to prepare for?

There's a Facebook group I'm on called STR Legal Barriers & Action where people will have other recommendations for you. 

However, I'm not a licensed real estate broker, which means I can't legally hold funds in the state. 

There are legal implications to being willfully deceptive to obtain a financial benefit for yourself. 

Increase in family size:A Borrower may be eligible for another house with an FHA-insured Mortgage if the Borrower provides satisfactory evidence that: • the Borrower has had an increase in legal dependents and the Property now fails to meet family needs; and • the Loan-to-Value (LTV) ratio on the current Principal Residence is equal to or less than 75% or is paid down to that amount, based on the outstanding Mortgage balance and a current residential appraisal.

I agree with Nathan..... there should be a compromise to make both happy.But legally the camera is pointing towards his vehicle, in his parking assigned space and if its also viewing a common public area, there is no invasion of privacy... its a common shared access area.

The credit is not mandatory, but covering some of your legal expenses would be nice. 

But if you plan on doing more spec homes, the LLC would likely offer more benefits through legal protections (obviously speak to your attorney about this) and potentially tax savings if you look to file as a S-Corp.