Look at the eichel trade, I think you are overpaying by a lot. Mittelstadt and Johnson probably don't have first round value anymore, but olofsson does and Rosen was a mid first last year. You are adding a 23 first, which I assume has protection, and also a 24 first. I don't know how you are valuing mittelstadt and Johnson here, I would think both have second round value. So from here it looks like you are offering roughly twice what eichel got. And I think we still need help at center more than we need help on the wing (although obviously Tkachuk brings a dimension that nobody on the roster brings).

Tkachuck has put up better numbers over his career and does not have a broken neck so I think he gets more than Jack, assuming Calgary let's the player negotiate a deal before he is traded.