The roads to tahach are going to get you killed in the winter if you drive from Bako.
You cannot drive between 5pm-830am because of fog and black ice. And it's thickass fog, not romantic San Franisco fog, but creepy scary crash into semi head on before you know what hit you fog. So, definitely live in Bako. You can find a house easy in your price range in the NW & SW area. Both are good areas, just don't live on the east side >.> you'll get shot. This is known because Kern Med Ctr is a teaching hospital where alot of the clientele come in from the east side. Just google "Property Management Bakersfield" for rental listings.
The air only sucks in the summer, so it should be nice by the time you get here.
Also, if you're boyfriend is working in the oilfields, the majority of the oilfields are an hour west of bakersfield. And, it's 45 min to get to Bakersfield from Tehachapi.
Check out
www.co.kern.ca.us you can find available employment for Kern Medical there.
Good Luck in the armpit of CA... sorry but I call it that all the time too.