All of my applications are coming back squeaky clean. 

Option 3 may sound tempting to you, but before considering that route I would interview prospective property managers and house-cleaning services in the area you are considering.

Great property, perfect setup for a duplex with separate driveways, entrances, back patios w/ storage, brand new roof, plumbing, newer HVAC, appliances, flooring, etc.

The more complicated your business structure becomes, the more problems it can actually cause such as when looking for lending options, getting the best interest rate, keeping clean accounting, filing taxes, opening bank accounts, getting credit cards, executing a 1031, making title insurance claims or even triggering a due on sale clause, etc. 

I went into the bedrooms and don't notice the sloping floors so much just by 'feel' and admittedly haven't put any measuring device like a level to it. 

I live on the top floor but have also rented out both floors previously via STR.

I have a crew of a part time handyman, cleaning/painting crew who is helping in areas such as basic PM and contractors for general rehab.

Keep in mind that there may be legit charges associated with termination- for instance, they may need to hold some funds in escrow to cover lingering utility bills or cleaning after that 30 day period. 

As I prepare the unit for the next tenant, I'm finding the gas stove cooktop and the inner oven glass particularly challenging to clean.

We would handle the guest communication, coordinating cleaning, minor repairs, stocking supplies, calendar management, etc.