My Grandparents lived in Bodfish near Lake Isabella. Learned to waterski there... good memories.
I know where that is, funny thing is I had never been to Kern County or even heard of Tehachapi until we moved here 8 years ago from the OC.
Living in the OC, you didn't need to know about it. You had just about everything you needed. My wife's parents live in Dana Point. If you want rolling hills, that's what Mammoth and Yosemite are for.
Don't know how long you've been there, but if you haven't seen the wild flowers in spring in the Tehachapi area, you are missing an awesome sight. Many a postcard have been printed of those hills.