the economics look pretty good at south carolina. it actually has an economy like san diego (although not as big). the housing market still has some upside to it, so you can get some decent appreciation for probably the next few years.
if you do move there, do a comparison and see how much money you can save and invest for san diego vs. columbia.
i have a 4 plex in columbia. it cost $232k and cash flows $300/mo. if the money works out, you should consider buying a 4 plex and live in one and rent out the other three. if you don’t mind the extra job, haha. but if i were you, that’s what i would do. the 4 plex will give you a little extra cash and will lower your taxes so it will feel like you are making $100k anyways.