Just put (6) in the ___ spot.

This is called spot zoning and is illegal.

At this point, I know the basics and am working to get my feet wet in the act.I am learning how to spot good deals, so in the spirit of #givefirst, I would like to work with select individuals in finding them [free of charge]. 

You can spot the bad guys by the "free seminar coming to a Hotel in your town soon" pitch. 

There's also the difficulty to rent the spots since not everyone own a mobile home to park at the lot.

Using some basic knowledge I know the more expensive the project the more I should charge, but then how do I find that sweet spot where the project pays for itself and other things while not turning away potential tenants?

South City is a great spot.

Alec: Let me make a suggestion that if you mother-in-law is really in a spot to move (I don't know what her motivation is for moving) then if your future wife has good credit etc.. then work with the lender for simple assumption of the mortgage. 

So my only value add component here would be to add more spots and fill them, right?

I recently bought 21 Indian Lane, a sweet spot between Asheville and Weaverville with three singlewides and happy tenants.