Hi there...back with some more questions for all you experts

Due to micro infiltration into some of the vascularity around the original tumor site, my docs are advising that I go through a full round plus (over 6 weeks) of radiation and something called chemo lite. So...
1) If all of my nodes are clear and there are no metastasis, why is the extra long radiation (with its subsequent life long after effects) warranted?
2) Anyone have any experience with chemo lite? From what I understand, it is given once a week and is far better tolerated than the full regimen. Just trying to plan ahead and be prepared.
3) My family is hounding me to get a second opinion (City of Hope). While I am completely happy with my current doctors and care, they still think I need to get another opinion. Anyone have experience with City of Hope for SCC? (Apologies if it is a no-no to solicit reviews about specific cancer care centers).
Thanks for your sage advice,
HB