Why set the lease to start tomorrow if he wont be utilizing the room for another 3-4 weeks?

Use a copy of the Quit Deed to show the proof.Update everything associated with your business (utilities, bank accounts,...) to the LLC name 

So how do I make my tenets pay all the utilities?

One big takeaway for me personally, would be to utilize the help of a licensed professional commercial realtor to negotiate on my behalf, going forward.

I wouldn't include any utilities in rent if it can at all be avoided, even with solar. 

Owners with 40+ units tend to have more expenses (maintenance, utilities, etc.) and are more likely to have tenants that pay late, so we try to wait until the majority of funds are received before paying them. 

Is it possible to get around an assignment clause by utilizing a LLC as the buyer then selling the interest in the LLC to the end buyer (Cash Buyer) at the closing.

1200 Gross - all the utilities, furnishing the unit suitable for a STR etc.

Many places in Florida are builder where city utilities are not yet available. 

When the property was sold he was given 50% of the net profit after all my expenses (purchase, rehab, interest rate, property management, utilities) which I thought was 100% fair.