Aw OP, I have a huge nose too so join the club! I also have really small boobs, and when I was younger (17-19ish) I absolutely hated both aspects of myself and thought I'd get plastic surgery in a heartbeat. Now I'm a few years older I'm SO glad I didn't - not only can it go wrong so easily, but those features are a part of me, and I've learnt that they're not actually as big a deal as I thought they were. Actually, they're just not a big deal, full stop. Maybe try working on your confidence in your appearance in less intrusive ways? Eat well, exercise, spend a little bit on some really nice clothes/the hairdressers... that sort of thing? I mean, think of all the better things you could be spending that kind of money on!
But yeah, I don't know how much loan/grants you get, but I got the full amounts and I could technically have saved up enough by the end of my degree.