Typically one of the main reasons for hiring a PM is to separate you, as Owner, from the day to day operations dealing with tenants.

In addition it would require the use of a separate corporation.

Pay to separately meter the utility.

Most importantly it separates the purchase and the sale on to two different tax returns.

Asset protection is also irrelevant because LP shares are illiquid and cannot be easily separated from their owners. 

There is no way to fairly bill usage back to tenants as its not separately metered.

In addition, I let them know that their rent is below market value and gave a separate search of other comparable rentals in the area so they can see that they are getting a good deal where they are. 

Id separate GC from owner, you'll need HOA entity for management of common areas.

You'll be able to use projected rental income to qualify and having separate units should make for an easy transition out if you decide to move after a year. 

I have read that it is best to have separate contracts for the MHs and for the land.