There is also the Dover air base there so I would research/ask questions here on BP about military housing.

Pressure wash five different houses?

the units are currently occupied so I anticipate little to no repairs beyond cleaning the carpet and pressure washing the outside. 

Furthermore, we have also started using our home as an Air BNB rental and have found it to be great way to make passive income.  

I would advise that you find a company that doesn’t use high pressure sales tactics and that allows for an appraisal contingency.

He give me details but was not a high pressure have to sign up now situation.  

If he puts two-and-two together that it was you then you're going to be out anyways and even if it helps put pressure on him to get out of the property, then they're going to be up your butt about everything that's wrong.

@Mindy Jensen Air France can get you to Hawaii for 30k miles. 

I had to get drywall compound on all seams-Closet bi-fold doors were off their hangers -Front door needed some more weatherstripping to seal out cold air.  

I live in the north east maybe it is because it is cooler here, but on the big multi family units here they use a direct vent natural gas fired water heater and they run a heat loop off the tank for a hydro air handler.