Welcome Jts. Actually having surgery by next week is pretty quick in my town or is it just be be scheduled? Averages can be a month or two waiting, especially with popular surgeons at a top rated CCC. Some tumors are aggressive, spread more quicky than others, depending on tumor grade, so that may be consideration. On two seperate occassions, I had tumors pop up while waiting for surgery, a few weeks, to remove another cancer, and was lucky to be vigilent, and discovered them, and had both removed in one surgery, twice. Maybe express your urgency, and see if there are any earlier openings, which did me no good lol. As time waits for no one, neither does cancer, but doctors seem to be in a different time zone than ours, and hopefully know more than we do. As far as any further radiation or Chemoradiation, it also depends on the tumor size, thickness and other pathology from surgery.
Best of luck with everything.