from strictly a financial standpoint-get together with a good California cpa and get some information on all the $$$$ aspects-not just the capital gains.
we owned and sold twice in California-both times with rental periods between the next home purchase (first time waiting for the new home to finish construction, second time to locate the new home out of state). there are financial issues beyond selling costs and potential capital gains.
when you own a home you're likely taking a mortgage tax deduction on your taxes which also lets you itemize and take other deductions and credits so while the savings between owning and renting may appear to be several hundred dollars a month (rent payment vs. mortgage/hoa costs) that savings may be totally eliminated (or you end up in the red) by virtue of losing those write-offs.
the other thing to consider is down the line when you decide to purchase again-you got a phenomenal deal on your current home which in California likely saves you thousands per year on property taxes (gotta love prop. 13

). if you end up buying a house that costs more, while a larger down payment will eliminate pmi you'll have increased property taxes, and depending on how new a neighborhood-bonds and levies that can last for decades (the home we sold had them for 20 years).
a cpa can look at your individual financial situation and crunch the numbers to let you know the true cost of selling short term (capital gains) and over the period of time you plan to rent (and the taxable period it covers).