Sir, you sure know how to pick them, I think any of these would work out just fine for you. I am the kind of person who watches my money, so I would go with the Excel or the Hitchhiker, because I know first hand how these two fifth-wheels are made. You can't go wrong with either one. Now if I were to buy the HH I would throw that couch out the door and go and get a nice leather one.
If you have all kinds of money then it would be the 2011 Carriage, not followed them the last few years, but back in 2004 and 05 they were well built RV's. Good Luck. The one you buy make sure it has a 50 A plug and has two AC to keep you cool in the summer time in CA. I would also want the main AC to be a heat pump to keep you warm when it's cold outside.
2006 Ford F-350 Crew Cab Lariat 4X2 PSD 6.0 TorqShift Automatic Transmission. Upfitter Switchers Chrome Door Handles, Oxford White with lower part being Arizona Beige Metallic. Creative Coating Sprayed in bed liner (local Company in Little Rock AR) 2