Difficulty getting back to California should be minimal, the WREB is administered at Creighton and there's the new PGY-1 law where you can get licensure without a regional boards by completing a residency.
Go for the cheaper school, I'm sure there's plenty of fun to be had around Omaha if you look for it. Take up camping, fishing and hiking, discover a new kind of fun. Plus what's more fun then effectively pocketing $150,000?