I wish you well through this battle you are and will be going through. I was diagnosed with stage 3 tongue cancer, and was told before surgery it would be up to me if i had radiation or not. After surgery, they told me i had to have radiation and chemo. I got them to back off on the chemo, but had 30 rad treatments.
It's a tough thing to go through, but I am finding that almost all of the side effects i got during radiation, which was almost every single one on the list they gave me, even the ones they told me i wouldn't get, are all almost gone and i have only been out of radiation for 3.5 months now. I know it's not the same for everyone, but considering i had so many and they were so bad, that gives some hope right?
I hope whatever you decide is your choice, and not something someone told you you should do. All anyone should be doing is giving you personal experience, maybe some advice, but ultimately it is ur decision.
I am not happy that i had to go through radiation, but i do say that i am more hopeful and believing that i won't have to deal with anything else with this cancer due to surgery, then radiation.
If you decide to have radiation and have any questions, ask away and i will do my best to answer.