I think the uncertainty surrounding the Iginla situation means you should not make this move. If it were a guarantee that he would be spending next year in Pittsburgh, then I would say pull the trigger no question, but since there are any number of places Iginla could end up - including back in Calgary - I don't think you should move away some serious youth pieces (Eberle especially) and hitch your futures to Kovalchuk and an aging Iginla.
See if you can wait this move out until Iggy's contract situation for next year is known. That way you would have a lot more context on which to base your final decision.
mounD: 2011-12 Champs // 2012-13 Champs
12 Team H2H Keeper (Keep 18)
3C, 3LW, 3RW, 3F, 6D, 2G, 5BN (IR)
G, A, +/-, PIM, PPP, SHP, SOG, FW (Hits 2014-15) // W, Sv%, GAA, SHO
C: Getzlaf, Backstrom, Thornton, Kadri, B.Richards
LW: Parise, Hall, Kunitz, Hartnell
RW: Kessel, Neal(LW), MacKinnon, Hossa, Backes(C)
D: Karlsson, Chara, Trouba, Burns, Krug, Boyle, Visnovsky
G: Rinne, M. Smith
Bn: Grabovski, Gallagher
Farm: Kuznetsov, Nelson, Jurco, Samuelsson, Barber - Maatta - Lack, Grubauer