The tenants can set their payments on automatic and have to go out of their way to stop payment and you can see when they have scheduled the payment.

The key is to adjust it closer to market rate while still giving the current tenants a feeling of value.If $350 more would bring it to market, try a rental rate increase of $225-$275. 

You have to change a few default values to zero, adjust the closing costs a bit and ignore a few pieces of data, but all of this is very simple.

Not knowing what the market is going to do in 10 years and possibly being at a peak right now it seems obvious an adjustable rate mortgage would  be pretty risky but I'd like others to weigh in.

If I were to take her, I would likely require automatic payments and an additional month security or last month rent paid upfront.

Has nothing to do with Rent or lease break Fee.Get a PM that will protect your asset.. they get their fee's and won't adjust them ...Will they>>Learn your state landlord tenant laws so you what you can and can't do for lease break fees and review your written lease so it clearly states penalties or put in a policy packet document addendum

To be fair, you have to adjust the charges based on the occupants like @Matthew Paul stated.

Any guesses as to what percentage of MH tenants are willing/able to setup automatic payments?  

The idea is to collect rent every month automatically with Airbnb I find it to be more leg work in preparing the property every time a new guest comes and goes.

Any half way decent property owner will be able to provide annual costs for all past years for anything they pay...but don't automatically trust the data you are provided.