He’s a real estate agent at a brokerage that’s been in his family who knows how long.

You must deposit and maintain your security deposit(s) into your brokerage's trust account registered with GREC.As long as you do this I believe you are clear but it's been a while for Georgia so I'd recommend a quick call to GREC to verify.

I am part of a family brokerage where my Dad is the broker and my mom is a Realestate agent.

So the good one's will typically have their brokerage license by now because of their many years of experience.

Opened my brokerage in S City in 2002.

I transferred my 401K balance each year to an IRA at a brokerage account where I had access to a wider set of investments.

I believe multifamily as a brokerage should be in its own shop, unless the market is too small. 

Depending on what brokerage you join you will have monthly office costs, and pay a percentage of your commissions to the brokerage.

As someone new looking to get started and hopefully set myself up for retirement in ~15 years, is that enough time or should I just put all my money in a brokerage account and save myself a lot of aggravation ? 

Hello Family..any recommendations for a real estate brokerage that allow wholesaling??