ok so if you got this:

BOW: 47,000 lbs(not sure how close i am on this one)
Max 76 PAX at 190 lbs winter: 14,440
Max Fwd and Aft Cargo Worst case: 5,440

ZFW: 66,880 if my BOW was correct (Max ZFW allowable is 70,750)

Max T/O is 84,500, so this means you can take 17,620 lbs fuel - (Max allowed on board is 19,594)


call it a 5 hour flight at 3500 lbs/hr = 17,500 lb burn (this is an overly conservative burn that incorporates landing with reserves)

hmmm it looks close but then again there probably wont be that much cargo on board