I actually think Staal is your most valuable keeper closely followed by Giroux then some distance to Parise.
If you can package Parise with either RHN or Yak to get Ovechkin, I think I would do it based on your league cats.
Yahoo weekly starts 12 team league, keep 17 plus farm
GS, W, L, SV, GAA, SV%, SO G, A, P, +/-, PIM, SOG, GWG, PPP, SHP, HITS, FOW
3C: H. Sedin,Stepan, Stastny, R. Johansen, Hanzal, Anisimov,
3LW: Burrows, Vanek, Ott, Lupul, Dubinsky
3RW: Doan, Pavelski, Brown, Okposo,
6D: Franson, Doughty, Voynov, Subban, Markov, Gonchar, Karlsson
2G: Price, Emery
Farm: (< 100 games): S. Elliott, J. Bernier, Galchenyuk, Etem, Eakin, Atkinson