You are correct, if your intention is not to continue with your side self-employment business activity then Solo 401k would not be the best choice for you as you would have to terminate the plan if the plan sponsor ceases to exist.While self-directed IRA LLC does not have all of the advantages of the truly self-directed Solo 401k it would be your option if you wish to have checkbook control over your retirement moneys. 

I recently received my Illinois Real Estate License and am sponsored by a local brokerage.  

Then I'll either contact a holding company or get sponsored for two years.

Before doing that consider bringing in a sponsor for the loan.

I will offer to help them any reasonable way I can like helping with their kids fundraising events,attending and sponsoring their charity event and sports teams,and just be apart of their lives to stay at the top of their minds when someone they know needs a Realtor to handle their real estate needs.

My sponsor group put 1 million of our own cash.

Typically, employer sponsored plans can not be rolled over until you are either no longer working for this employer or reach a retirement age.To find out for sure contact your employer (or plan administrator) and inquire with them if they allow for "in-service distribution". 

Jamel Gibbs is the sponsoring guru.

Investors have to answer two questions to make a decision: "is the sponsor credible and can deliver?"

If you are accredited investor just think about investing with a proven sponsor on a larger value add deal with more equity growth potential for your share of investment.