Good retail leasing firms cover a wide geography and all three of the firms you listed will cover all of northern/central NJ, drawing a line from Trenton across the state and northward.  

Plus the street is not that wide.

It allows me to invest my profits in a wide variety of areas and commodities reducing my exposure to foreseeable yet unstoppable forces. 

I was curious if anyone out there in the big wide world invests using this strategy and to what degree of success.

The $10,000 option fee you paid to the sellar up front would be applied to reduce your purchase price.There's more to it and certainly a wide variety of strategies that you could use within the lease option.

.: "Carry $150 for 24" wide vanity with top to be chosen later").

The property contains a double wide manufactured home.

It is widely used throughout real estate investing and is very simple.If you have no idea how much repairs will be, use $15-20 per square foot as an estimate.

Make sure the trench goes past the house and if it doesn't come out to ground-level naturally (ground sloping away from the house), then you will have to have it go to a pit that you dig down about 3 feet deeper than the drain pipe and about 4' x 4' wide.

I am trying to purchase a piece of land that has a 1971 single-wide mobile home on it.