Just a have been some serious discussions on 
Erbitux. What I've read says that non 
HPV cancer responds better to it, and it only works for certain people. It's best to have it in conjunction with cisplatin. Being that your cancer is 
HPV positive, which responds well  to rads and chemo, the neck dissection isn't always necessary. If you had oral tongue or mucosal cancer my response would be different - re the dissection, but i'll let others with a similar diagnoses put their two cents in too. Best of luck and welcome.