Wayne,
I too had the mandible resected and replaced with the fibula age 44. Honestly, the leg was the most painful part of the procedure, which lasted like you 17 hours. I had the procedure 5 years ago, and today can eat anything. Except for the dry mouth, I do not have major problems. I coach a boys U14 soccer team, and practice with them twice a week. I was back to work about 6 months after surgery, or about 2 1/2 months after chemo/radiation treatments.
You have had a very difficult time and you can flourish down the road. Nutrition is key. I made it through with enriched milk shakes and cocoa wheats cereal.
I was emotionally wrecked after surgery, as my speech was very much affected. In my profession I made numerous speeches and presentations, especially at national and international seminars and professional meetings. I thought I would never be able to return, but with the encouragement of my doctors I am back to doing everything I used to do. I am not the same, just a different normal now. That was a realization I had to accept. You will forever be changed, but you are the same person. Best of luck to you. I will watch this posting.