i live in los angeles, and although i broke down and got a mammoth season pass this year, i ski big bear a lot.
its massively snowboarder-dominated, which is in keeping with socals surf and skate scene.
lots of rails
lots of sun and cold nights = rock hard snow at 9 am, then good from 10a-noon, then after 12:00PM its slushfest. this is true for most of the season.
for a couple weeks in february / maybe early march u might get fresh stuff. In this case ride baldy for a day or two.
i take it by 'dual pass' u mean snow summit too? If so, NO dont get both, big bear is where ull want to stay to avoid the gaper crowd.
message me if u want to meet up or have any specific qs