Hello, Terry.
My husband, Tom, will begin radiation on Sept. 7, as well. He is scheduled for 7 weeks as well, and is currently undergoing his second of 3 or 4 rounds of chemo.
We are definately going with the PEG - Tom's radiation doc refuses to start the treatment without it. The weight thing is already an issue for us. He started this ride at 155 (on a 5'11" frame) and he's already been down to 140. Today, he's at 143.5 - and not handling the chemo reaction well enough to have any desire for food. I'd have to think that unless you were obese, the PEG would be a requirement to get one through in as good a condition as possible.
WE are wishing you all good things. You are on our prayer list.
Nicki