Thank you to both for the replies. Yes, I'm a little familiar with prohibited transactions. This is why I was thinking to include only the free-standing home under the IRA (with it's own LLC).... less checks, maintenance, etc.
The MHP portion of the deal would be under a separate LLC, and not specifically funded by my IRA.
The rent payment from the home would go into the Self-Directed IRA account (holding company), and the MHP would go into my personal current cash-flow (under it's own LLC).
Again, I'm new, and figuring this out. It just seems I can do this way-maybe.
It looks a little tricky, but I feel I can do it and be within the law.
Again, please continue to provide your insights, there's alot I don't know. And, even more I don't know that I don't know (that's the stuff that scares me).