I have a JD and I am a licensed attorney out of state. I have a CA agents lic. I work for a broker and my split with him is usually 50/50.
FYI: If you are a licensed attorney in CA you don't need a brokers license. Check into joining your local "board" (MLS provider) to see about joining as a "Real Estate Professional." You will not be able to call your self a "REALTOR". That name is copy righted and have to be a member of their club basically. As a member of your local board, you get access to all the contracts and forms you would need. The program is called ZipForms on their website. check out C.A.R.E website as well.
You need to figure out what specially you want to do. From the sounds of it, you may be incurring lots of liability for little gain. You will need to carry E and O insurance to cover you and your agents. -- Think about this: Unless you are lucky and get both sides of the deal and the listing calls for a 6%. Usually 3% goes to either the seller or buyer agent. Figure 500K house would get you 15K before all your costs and doc fees, escrow fees etc. If you took 15% of the remaining amount you might end up with 1500.00 to 1800.00. Sounds like a lot, but not really after you pay all your insurance and other costs. Remember all that agency stuff from Barbri??? Yep. It actually comes into play quit a bit.
Also, note: I just came a from CLE work shop about Professional Responsibility. Guess who the mostly likely to get sued and highest to cover group of attorneys make up the E/O insurance group? Yep. Real Estate Attorney in a practice of 1-5 professionals with 2-5 yrs experiences. Think about how long it takes for a statute to run and who is left money after escrow closes and all funds have been distributed.
Also, I would consider not being a Lic Broker b/c this changes the rules under the CA Prof Code as to what you have to disclose to potential buyers and sellers.
Do all your homework first.
Sorry for the ramble and typos. its late, going to bed.