In your settings, I would certainly do this. Heck, I'd trade Couture for OEL straight up in a points only league. OEL's point totals will only go up and he is good for 25 mins a game consistently. Go for it.
Points only keeper League, weekly head to head, 2RW, 2LW, 2C, 4D, 1 G , (goalies 2pts for W +3 for SO)
LW: Gaborik, Landeskog, Burrows
C: Seguin, Skinner, Berglund, Nyquist, Lombardi
RW: Eberle, Oshie, Doan, Silfverberg
D: Doughty, Carlson, Ekman-Larsson, Carle
G: Price , Schneider, Nabokov