I fail to see the negative side of getting a bunch of shit I want (aka Peavey amp, Blackouts, an SM57) and a fuckton of CDs while spending a larger portion (than right now) of my time listening to metal, jamming with my band, and playing video games without the nagging feeling that I'm a total failure at life because I'll be going to an elite school next year.
Look at it this way: up to this point in my life I've never made a huge mistake, i.e. one that had a serious and obvious negative impact on the course of my life or that dramatically affected the immediate quality of my life. So if this turns out to be a bad decision, I'm still about 2 under par.