I think I would stay and finish my degree, even if it takes on less importance from a financial point of view (as in allowing me to hopefully earn more in future). I dunno if I would give that much to my family, they're pretty well off generally, and instead of giving money to my mates I think I'd organise a really big holiday for all of us which I'd pay for. Maybe a bit to charity but I wouldn't go crazy with it. I'd like to travel a lot too and go to some major sporting events; a Broncos game at Mile High, the Super Bowl, World Cup and the Ashes in Australia
Apart from that I'd buy some properties in a few different countries and just live the good life