you need to provide more info on your truck. it sounds like you have the smaller v-8 or even the v-6, with only 6000lbs. tow capacity.
need to know engine size, rear end ratio and if it has the factory tow package, not just an aftermarket hitch receiver.
this will help figuring exactly what your actual tow capacity is.
as a fellow Californian, prices out here are way more than elsewhere in the country. only RVs made in West Coast factories are competitive in price. and there aren't many factories out here.
i suggest getting some prices from RVW and RVDirect to get yourself started.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC