Roger,
First I want to congratulate you on your great news.I don't know enough about your situation to make a qualified awnser of whether to have radiation or not. But radiation is the best treatment for H&N cancers. I would take the stance that your dr's would need to talk you out of radiation and why they felt you don't need it. Rather than them trying to convince you to have it. Whatevere choice you make keep us up to speed.
Always'
Mark D.