Looks like we'll be giving route 1 some serious consideration :) Thanks, everyone!
It's nice to get some realworld input from experienced travelers like yourselves in order to make an informed decision.
CA Traveler, I really like the idea of taking I10 to San Berdoo then bypassing most of the LA basin by taking I215/I15 to 138 (from Cajon Junction) to Palmdale. How is local traffic on this 50 mile stretch from Cajon Junction to Palmdale?
Toobold, appreciate the heads-up about heavy Vegas to Bakersfield traffic on 58 on Sundays. If we take route 1 we'll probably spend the night in Barstow Sunday night. Hopefully it'll be clear Mon morning.
2gypsies, yup, that I40 stretch from Needles to Barstow looks pretty desolate. My only worry with that stretch is a potential breakdown. With a well-maintained, relatively new, TV and TT hopefully that won't be an issue.
Thanks again everyone!