skate banana is actually med stiff, but is to expensive for what you get.
The sierrascope is probably your best bet for the ones you listed.
I suggest the Signal park flat; light, strong, has a sintered base, and is nice and flexible for the park but the flat camber will hold up better than the rocker for the rest of the hill. Or the signal omni; better for the mountain but still soft enough for park.
Dude, suckin at somethin' is just the first step to bein' sorta good at somethin'