All kinds of things to consider here...

I have been ignoring him because I am kind of scared of the unknown since currently I use HML and personal funds for financing.

I feel like I need to get some kind of written agreement?

While UBIT does not apply to solo 401k real estate investments that incorporate debt financing, UBIT does apply to margin trading performed under the solo 401k brokerage account. 

It has left kind of scar but now am looking to get back into it.

I've never had an on-call job but I can imagine knowing you can be thrown into handling some residential emergency at 2am can be kind of stressful.I'll ask him about the manager on site setup, I believe these will be units as in SFR's mostly and possibly some duplex's / triplex's.I definitely have been thinking on owning a duplex / triplex, I'd love to do that.

Kindly don't fall for appreciation stuff as it is very risky and that is NOT 2006.Hope it helps.

The broker gave me no confidential information about the seller that would give me an advantage of any kind.

What kind of investing do you think you'll be getting into?

You won't find that kind of deal now and BOA doesn't do these anymore anyway.As far as places to get them, I have two with Huntington Bank.