A 1st, Cundari (undrafted), and Berra (4th rounder) for J-Bo? Maybe about right, if Bouwmeester actually performs.
Shedding Stafford and getting his return makes a better team than shedding Pominville for his return. I'm not sure if that linguistically makes sense, but the right move is to sell Stafford for his return first. That's based on the idea that this team is worse with Stafford on it, and could still be pretty good with Pommer on it.