That trade is kind of confusing to me. What category are you trying to improve on?
Dwight almost guarantees you'll tank FT%, which isn't a good idea in roto, unless you're tanking super hard (i.e. own Rondo, Griffin and Bogut also, or are already in last place). Tyreke has potential but might shut it down. Pierce looks like a beast this year.
Kev-Martin has been playing well but is bound to get injured. Milsap and Brand are both playing way above their ADP's.
I feel like the trade is almost a wash in terms of value, as long as you don't mind the horrible FT% with Dwight.