Good choice! :) However, you probably should replace Electabuzz since it would be unnecessary to have 2 Electric-types on your team. It's your choice though, so I won't stop you if you use both.
Also, about Cottonee, no one has used it in NU. Either way, there are better choices for a Grass-type such as Jumpluff, Amoonguss, Sawsbuck, and Vileplume.