If you're in CA you don't need Magne. Steer away from the Mervin's. Check out Signal if you're worried about length. They make the whole quadfecta of the Park series pretty small, I know the camber goes down below 140, the Rocker I know comes in a 143, I'd bet the Rocker light comes down around there as will most likely the Park Flat. All for under $400 retail and they're made start to finish in CA.
I've never experienced ice anywhere else but man does Bear/Snow Summit get pretty icy in the Spring. For a couple hours at least. Then its corn. Then it's slush (and time to go home). But I haven't needed it.
Any M/L binding will be fine with a size 7 boot.