I have seriously been slacking and never updated this thread with my final outcome. Sorry!!
My last radiation treatment (28 treatments) was January 25th, then I took a month off to let radiation run its course and went back on February 25th for my laryngoscope and final diagnosis.
I am very happy to report that the cancer is GONE!
It has been 3 months since treatment ended and my voice quality has returned 100%! That was one of my biggest fears of losing my voice because I'm an amazing shower singer
Overall, the entire treatment process was not very painful for me. There are all kinds of horror stories on the internet about people needing feeding tubes because of excruciating throat pain, teeth falling out, etc. I think it's because of my young age and physical condition that I was able to get through radiation with nothing other than skin burns. I actually never missed a day of work. Unfortunately, cancer isn't cheap.
I now must see my ENT every month for the next 12 months for physical exams, then once every 60 days years 2-3, and then twice a year during year 4. If cancer does not come back in the next 4-5 years, I will be considered 100% cured. The most common places of cancer recurring among throat cancer survivors is lymph nodes or another form of oral cancer.
Again, a HUGE thank you to all of you for your prayers and optimism. There were a few times when I was really down in the dumps and I would re-read all of your posts to lift my spirits. It's fantastic that forums can provide a significant support group to anyone out there in a time of need.
For those wondering, I did vape through the entire treatment, but at 0 nicotine, and never drank a drop of alcohol. My oncologist gave me the OK to vape nicotine again so I'm now enjoying 6mg

My energy is back and I'm able to enjoy backpacking, mountain bike riding and canoeing again.

Here's to the next 5 years of continued health and happiness
PS - I hope my story of survival inspires you or someone close to you that has or is currently battling cancer. Never give up or lose hope.