(1) Kindle is actually $114, and you have a Kindle now, or you can sell it
(2) What is the BestBuy -$100 and $100 gift card? Are these educational discounts at all, which would only apply to students?
(3) Good for you that you have a tax-free weekend, not everyone does.
(4) Amazon already gives a decent discount on some models, such as about $60 off on the 11"/4GB/128GB.
(5) I think the 1-2 month shipping can be safely ignored, IMO. I ordered my MBA this week and it said 1-2 months at the time, and it arrived today.
So yes, this deal might not be the best, or at least substantially better, for you, but for many of us it is fantastic.