Cube, do you have a .edu email address? You can qualify for a year of free Amazon Prime. I'd assume that you already shipped however.
I wouldn't sweat it, stuff usually arrives before the expected date. It is a big holiday weekend, so can't blame them for not being able to deliver on monday. The only thing you might want to be concerned about is the variety of stuff, as it'll take longer to assemble all those bits into a package. Did you select multiple boxes or one?