Hi Aaron!
Welcome to BP
I have a very similar situation as you. I work a full time corp job and looking to invest in the LA market so I'll share my experiences so far for 4 unit multifamily. I haven't invested in 4+ units so I could not help you there.
For 4 units or less, sellers in LA know it's a good time to sell so it is hard now to find a great deal where the numbers makes sense(positive cash flow/above 5% cap rates). Also when you do find a deal, there seems to be more foreign investors that are willing to pay cash and there are multiple offers. Eventually the final offer is high and doesn't make sense to buy unless you want to pay more.
In the current market conditions (last 3 months), most of the properties that I've looked at in the LA typically will negative cash or get close to breaking even. So to invest in LA you will need to be ok with a negative cash flow and hope/wait for appreciation. During my searches, I did see some potential properties in Long Beach that had better numbers and there is a large supply of MF out there.
Overall keep looking and invest when the numbers makes sense for you and your partners.
Feel free to add me. Would love to see what you eventually do or buy.