I'm interested in a 10' 4-5wt for single handed spey casting. I'd like something pretty soft that flexes deeply, but has a decently strong tip. The last 18" or so needs to be present, as I'll have this thing pretty well loaded. I want the deep flex so that my wrist doesn't get a workout loading the rod. Light-in-hand would be nice to that end as well. I don't need to cast far.