No worries! If your buddy wants Luke, it's okay, but I do think I can do this. It's not a big build and sounds fun. I'm going to go with my black New Balance shoes, since you did. I like that idea better than orange anyway. But question: I noticed that you want to change the pants to black this year. Why? I think white looks great in your original setup and seems more Rebel than black. Black seems all Sith-y. When I think Rebel Alliance, I think orange and white, not orange and black? I nearly missed this when I read back over the first post, but when I caught it I was a bit puzzled. I realize football uniform design is very complicated (oh, Lords, what has Nike done to my beloved Browns...and seriously 49ers? WHAT?), but my color scheme would be: black shoes, orange socks, white pants with pads*, belt of white, orange, or black, orange and white jersey, shoulder pads of obviously whatever (pity I just trashed some for Mad Max... *grin*), white or grey helmet with orange, white, or black face mask. Chest box for this particular cosplay, but I would skip it if worn on my own somewhere.
But all that rambling to ask: why black pants? Just because?
*Unless one goes crazy and does home, away, and alternate versions.

Home - as above. Away - all the same but white jersey with orange. Alternate - variation of all orange (jersey, pants, socks) maybe, because that's what the flight suit is like.
But yeah...babbling. I'm going to go now.
I ordered my letter jacket patches last night, though! Woo-hoo! Left sleeve: the number five. Right sleeve: class of 77. Back: large "Rebels" patch. All in orange and white for the orange and white jacket. Still debating the front left chest: either doing a custom letter R with inserts** or a large Rebel Alliance patch (custom-made if possible for size and such) in orange and white. Sure the patches are costing me ten times what I paid for the jacket, but I knew that would be the case when I bought it. *shrug*
**Considering inserts in the letter saying "Beggar's Canyon", "T-16", or "X-Wing". Or a small Alliance symbol. Trying to decide how accurate I want this to be to either a "Luke in high school" or a mash up or Luke on Tatooine versus now type thing. Because no Rebel Alliance symbols on Tatooine, etc. Granted, Tatooine's high school is probably called the Womprats or the Sand Tigers or something...

Thinking, thinking...