Our Agreement is verbal in nature only. 

I prefer that to wasting my time on people without adequate income, etc. 

Red is too tempting to touch......HouseWarmer 35,000-BTU Wall-Mount Natural Gas Convection Heater $396 +installation. 25000 BTU is cheaper.

Naturally I don't want to to put my property in jeopardy or put myself at risk for being accused of receiving stolen property.

I prefer natural gas heat .

Most all of the structures are fairly temporary in nature of construction, so down the road, re-purposing the land would be incredibly easy. 

Also, depending on how the value of the property increased by adding that third unit, plus natural appreciation and paying down on the principal, you could look at refinancing out of the FHA loan to get rid of PMI.

Naturally, there is a benefit to HVAC and Electrical contractors.

I actually expressed to them the need to exempt Mom and Pop Landlords (4 unit and below) and rental owners due to the onerous nature.

Leaving the same investor split of the profits in conjunction with the more conservative assumptions will naturally lead to a lower (and more believable) projection of investor return.