Mes/Nec. PvE viability

I'm a huge "n00b" with GW and have created and deleted nearly 10 characters now just trying things out. I decided I wanted to try a Nec/Mes but then noticed that the fast cast would be a benefit and I wasn't close to many of the foes that died, negating the Nec attribute.

Is a Mes/Nec a viable PvE (mostly solo or with a duo) template? If not, any suggestions?

As an off topic question; is there a way to later alter your face/hairstyle clothing options to look like a different starting profession? I love some of the Nec hair choices and the Mes just doesn't have the same looks.

While I don't think there's any way to change the face and hair you picked at creation, you could always go with necro/mesmer instead. If you're shooting for the necro look and pve viability, it would be just about as solid as mesmer/necro (my current favorite atm). I'm not a build expert so I'll leave the point distribution to someone else. Also if you do a search I'm sure you'll find plenty of commentary on mesmer/nec builds.

Thanks for the reply.
I only went Mesmer/Necro for Fast Casting. I think I will try Necro/Mesmer and see how I like that. Just need another name I like.

Thanks again.