Welcome to the board. Seems as things are moving quickly for your Dad and that is a positive happening. Joanna answered your questions about nutrition...that and the peg tube have been discussed extensively on these boards. An dif you will go to the sitemap there is even more information. I was treatened with the peg tube and it was never inserted. Which was not a good thing after all. They are invaluable at keeping up strength and nutrition. I just received the Easy to Swallow Cookbook and the recipes are very simple and look pretty good to me.
As far as hospitals and treatment centers you will find that MD Anderson and Sloan Kettering alternate years as the top Oral Cancer Centers in the coutry. Patients are treated by teams of docs - oncologists, chemo, surgery, radiation. I wasn't that lucky with my treatment and wish I had been. From what I have read that is the best way to go. Again go to the sitemap and look at all the offerings.
Good luck and know that there are many people here to answer questions and try and help. This board has some of the absolute best caregivers in the world.
Take care,
Dinah