No IR slot? I'd hope Spezz will be there soon. Could be your solution.
Dealing 2-for-1 is the best choice, but not always easy. I will say, however, that I think dropping Morin isn't a terrible idea. He's a solid prospect, but Kunitz is producing now. If you really think you can compete this year (which I wonder about -- agreeing with Sparrow's questions about goaltending and injuries), then I'd roll with the hotter hand. If you don't think you're in it for this season, then dropping Kunitz is an easier choice.
I also like the MDZ option too. With the D you've got, I can't imagine he's much help to you right now.
Sometimes, I think it's easy to get enamored with prospects, but with only 11 starting forwards, it's tough to hang on to 3-4 prospects that won't guarantee production (you hit with Stepan and even Perreault hopefully for this year, but Omark and Morin aren't helping much this season). I'd think you'd want 12-13 forwards that are safer bets for guaranteed production.
Points-only, Full Keeper Dynasty League
Active roster (no starts, just total points): 12 FW, 6 D, 1 Goalie
Forwards: Kucherov, Barkov, Teravainen, Seguin, Hoffman, Lindholm, Gusev, Horvat, Meier, Perron, Schwartz, Johansen, Pavelski, Buchnevich, Hischier, Granlund, Bracco
Defense: Josi, Dahlin, Letang, Gostisbehere, Ekman-Larsson, Petry, Slavin, Keith, Matheson
Goal: Lehner, Holtby, Varlamov
Farm: Soderstrom, York, Woo, Tracey, Dorofeyev