Bear in mind, I've not come off the sidelines of REI yet (so limited knowledge), but...Perhaps offering your properties as "rent-to-own" would give your residents a pathway to home ownership, while providing some form of return to you for your investment, and help ease your morality concerns?

They will (should) even be able to correctly identify non-load bearing walls that can be treated like personal property instead of part of the structure if certain conditions are met.

Not that I care but I find it strange that you are with Lifestyles but seem excited about Brad's program.Whether the training was $1k or $50 that has no bearing on what he can or can not offer. 

Bearing in mind they are solidly built to code and could be set on pilings on a lot, not on a trailer.Also would they appreciate in value in the same way a regular SFH might?

The next morning around 5AM I got a call from the AC company and they told me the lady of the house was begging for them to get out there because it's too hot  and her husband was doing chemo at home and couldn't bear the heat.

I think you need to define how active an investor  you want to be , what risk you are prepared to bear and what returns you are realistically looking for.

This is an interest bearing note,even though your paying it to yourself.

Why would you pay me up front when you can put the money in a interest bearing account and pay monthly. 

There is one true test to determine if an investment is passive: once you have made the investment, from that point forward, any activity made by you, regardless of the type, duration, frequency, etc of that action, has no bearing whatsoever on the outcome of the investment.

Even better would be "Are you TRULY an investor?".