Talk about a quality problem. First of all let me congratulate you on your success in life; not because you're 25 with a great job and a pile of cash, but because you are wise enough to seek advise.
I own apartments in Texas and I would say that market is topped out. It's never had higher prices, it's never had a higher demand, and vacancy has never been so low. These are all signs of "top of the market".
I also bought notes SFR's in Indy 5 years ago and foreclosed to make my own turn key rentals. I think Indy could be approaching it's own historical top as well.
Both Indy and Austin were great markets to buy five years ago. But don't buy stocks or real estate when they hit their all-time historical high.
If I was you I would follow Gordon Cluffe's suggestion; buy a home with FHA, get your buddies to pay the mortgage by way of rent, and live there while you ride the appreciation of the OC market back up.
Remember, California has not made it's full recovery from the crash just yet. In fact it is way behind the curve compared to Texas and Indy.
If you can make anything cash flow (or break even while living in it) in so cal, you will reap the benefits. I've had houses go up $100k in a year or two in so cal - which would never happen in Tx or Indy.
Keep playing your cards right.
And have fun.
PS: I live and work in So Cal
We are developing luxury homes and buying large Multifamily here in so cal for cash flow.