Better yet... why don't you be a dear and rewrite the hop schedule with the 7 ounces I mentioned? This is much more your area than mine.
EDIT: Actually I think I have 2 ounces of Simcoe left.
Ok, but just for fun...
I would be inclined to save the Zythos for it's own beer since it is a blend of hops already and might showcase nicely as the lone hop(s). Minus the bittering addition if you're giving me 7ozs. of hops only 2 of which are Simcoe I would probably do 1.5oz each of Citra and Nelson in the whirlpool and then 2oz Simcoe, 1oz Citra and 1oz. Nelson Sauvin dry.