Vern, are you running a BNSF train or a UP/SP train....and where are you trying to end up, Fresno or LA?
If BNSF and if Fresno, why do you need to go via Cajon and into LA?
If BNSF and if LA, then down to Fullerton and then into LA via San Bernadino Sub.
If UP/SP, and if Fresno, you're stuffed because UPs Fresno Sub has a big blank in it between Bakersfield and Fresno.
If UP/SP to LA then easy-peasy....straight down the Cajon to West Colton, then the Alhambra Sub.
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