Whatever you do don't put yourself in a financial bind to buy what is basically a fad weapon or anything outside of necessity really but that's another story. The AR, while a very cool platform, is one of many. When you have the money something will be available. It may not necessarily be an AR, but then again, by then you may not be looking for that particular flavor. AR lovers, please don't be upset at the term "fad", I own an AR myself (WW SRC), but at the moment, they are a bit of a fad, due mostly to possible diminishing supply. No disrespect meant.
Going in debt for toys is a young man's game and we've all done it once or twice, but try to limit yourself to buying them at their low price points at least, instead of right now when they are about as high as they can possibly get...lol.