Warning-there will be work involved!

. :) One thing I did not have more direct involvement in was the screening of the tenant.

All transactions involving your Solo 401k must be arms length, meaning that you personally are not part of the transaction.

For private assets like an LP interest in a VC or private equity fund, exiting the position before fund liquidation can involve deep discounts, and often require GP approval.

Having been involved with the paying public for many, many years now, late fees do nothing for the person that's inclined to pay late.

Who would I need to involve to make this happen?

I also would recommend Jon Hyndiuk (Hyndiuk Law, he also owns ISR Title), Michael Plumb/Rob Sayas (Sayas, Schmuki & Plum SC)--I think Rob owns or is a partner in Royalty Title, Rob Saya's brother Jonathon Sayas is also an attorney and is Stewart Title's on staff attorney, and James Eby who is also a popular RE lawyer and he's been involved in some probate deals we've done.

The determinations of whether such investment income is considered to be ordinary interest income, net rental income, and/or capital gains are much more involved. 

I work for the post office and when an address is changed, County 911 has to be involved in changing in.

Taking action is the best next step since you've already been listening to the podcasts and getting involved in the forums (it's also the hardest :) Since you have a good job, find out how much you can qualify for and go from there!