With that said, they are trying to improve the area.

A local agent he contacted said they would recommend listing at $11kAn improved property in the area recently sold for $95k (1/1, 702 SF):  http://www.zillow.com/homes/for_sale/Costilla-Coun...I'm such a newbie working on investing here in FL and have never worked a deal in raw land, so I have no idea how to steer him in the right direction.  

I am always looking to improve my handout.

As someone who has always felt at odds with the traditional life script, I've realized real estate was the perfect avenue to utilize my unique skill set to build wealth for myself and my team, while simultaneously improving communities along the way.Currently I’m focused on more active investing strategies—primarily wholesaling and rehabbing—as a way to build up a base of capital to reinvest in the growth of my business.

There is zero inventory in this price range.

Months Supply of Inventory for Single Family is down 21.5% from last January, with a 3.4 month supply this January as compared to a 4.4 month supply in January 2015. 

One thing to add, make sure when you are looking at your cash flow you set aside some for reserves for the inevitable capital improvements that will be required.  

From reading it looks like I can use the FMV at the time of conversion OR the purchase price plus the cost of improvements.  

If they get 3rd party financing (can be hard to do with MH), you could use that cash influx to purchase more Mobiles and do improvements to the land.  

"The steady improvement in [home] sales will support price appreciation...