Hello Justin,
Welcome to the IE! I am currently househacking a duplex in redlands. I used FHA to get into it. I learned a-lot through the process. Shortly after I became a realtor for the David Greene Socal Team. I do know that in Ca it is very difficult to cashflow when house-hacking. It is a great steppingstone, and can be used to decrease your cost of living. That way you can save at a faster rate for your next investment. Things are working great for me so far. Feel free to connect and reach out. We have some great lenders you can connect with and strategize, or see what purchase price you would qualify for. Lenders will use 75% of the rental income on the units to count towards your income to help you qualify for a greater purchase price. But as my colleagues mentioned, there is a self-sufficiency test that lenders must abide to when using FHA. However, we are in a market where there are healthy negotiations going on between buyer and seller. So its a great opportunity for buyers to get a reasonable/fair price on their purchase (at least compared to the last few years).
Best of luck!