8 wt for sure, length is tough, I guess I would go with an 11' switch. that way its not too big to use at home for carp, and on the smaller salmon rivers for steelhead and big enough to get me by on the bigger rivers. Im not really into small fish, i almost always target fish that require 7/8/9 weight rods
versatility, an 8 wt switch can get me through ALL my fishing.