In my developments, I went to everyone I could in the area and got the most RELIABLE (not cheapest) person in order to make my numbers work the best. 

I'm an investor and flipper in the city, and I work for a developer focused specifically in Lowell as well.

Now you have x% of your original property equity, less cash-out fees and however much you need to pay to service the original loan while you're doing business development. 

Also, a contractor may not be the best person to develop your scope of work! 

So, if a developer comes along and buys the mobile home park you will lose your entire investment.

Do you plan to further develop the agent side and turn that into a full time thing?

The city's macroeconomics is looking great - lots of population and job growth due to the booming tech scene and many companies choosing to move and develop here.

Because see, they've got a script & the software to tell them how to respond to tenants & owners, what the cost of a repair or appropriate vacancy rate should be, etc... see where this is going?

Your development deal will look much like a flip in the eyes of the IRS since it is 6-9 months as well you'll have the short-term side of taxes, not the capital gains taxing on it.  

Lawn cutting/snow removal you can get quotes for, plan for some vacancy, property management software if you will use any.Hope this helps.