Based on my past 23 years of experience, I believe the Oak Park area will hold more value over the next 5 years. The schools are much better in that area than LAUSD. In addition that area is a lot newer with nicer ameneties. The other areas of Woodland Hills and Tarzana are still very good areas and most likely you would get more for your money in those areas opposed to Oak Park. In regard to whether you are looking too early, I believe that it is not too early to buy. In fact, there are some great buys out there right now. If your long-term goals are to hold and sell much later, then it's a great time to buy. If you plan on flipping it in the next several years, then I would not buy right now. I hope this answers all of your questions.
West Hills, CA
I am not sure if you meant to do this, but your question showed up in questions for Atlanta, Georgia and it looks like it should be in a California area. You may need to repost the question.