Linda,
Radiation was the toughest part of my treatment. Be ready for some difficulty in eating, as swallowing was nearly impossible for me at the end (mandibular SCC III/IV). Nutrition and hydration were critical - my wife is a registered dietitcian, and milk shakes made with Boost nutritional supplement and cocoa wheats cereal got me through without a feeding tube. No five years past the surgery and doing great. I lost one toothe due to resorption after treatment, and of course 5 due to the surgery. Fluoride treatments every night seem to be keeping the teeth I still have intact.
Best of luck to you.