I don’t have any issues with it, he’s only an email or phone call away, at any given time and they’re very reasonably priced for the service and advice that I get.

They agreed to pay in accordance to the lease and failure to manage to the lease is the #1 reason why landlords fail (Source: American Apartment Owners Assn).Cowboy up and stop having the tenant control your ROI.Best.

They didn’t give me a reason why my loan didn’t close.

I didn't stop requesting SSNs for no reason. 

If you don’t plan to sell the lots w/mobile homes is there a reason you have to split the lot?

(Not a lawyer so this is not legal advice) You've listed all the reasons why people fire property managers, it sounds like they've just done a poor job of meeting your expectations. 

Each exit strategy offers numerous advantages on both sides. 

The hilly terrain is a main reason for this and you can't really see that on a map so knowing the areas is key.We have old housing stock as well so big things like plumbing and electrical can vary cost wise if they have or haven't been updated.

No reason for me to go the through the hassle of the sale process unless there is some type of gain which the investor is open to and this is where I need the advice.

I would say a 10% CoC and 15-20% ROI are reasonable returns.