Your keepers are ridiculous.
I would absolutely make that trade in a keep 6. Would RNH be a keeper for the other team? If not you can get him back in the draft, but if he is there are more immediate offensive options available that will help you contend again. Iginla will give you a boost that RNH can't right now. Go for it.
16 team, full keeper
19 roster players, 15 prospects
Stats: G, A, PPG, SHG, special teams assists, SOG, FOW, PIM, hits, blocked shots, +/-, W, SO, saves, s%, GAA, shootout saves
C: Crosby, H. Sedin, Boyle, Brassard
W: P. Kane, Voracek, Burrows, Ott, Filppula, Dorsett, Hudler, Bouchard, Zuccarello, Stalberg
D: Karlsson, Letang, Enstrom, Boyle, Giordano, Gorges, M. Stuart
G: Quick, Bryzgalov, Kiprusoff, Ellis
Prospects: Granlund, Atkinson, Pirri, Killorn, T. Johnson, Galiev, Corrado, Koekkoek, Moore, Rundblad, Bachman, C. Johnson, Desjardins