Hi, I know laptops are so cool and all, but think about it: do you really need to edit on a laptop? At 14?
It's great that you found this addictive hobby earlier than most of us (probably except LukeD ) but before spending all that money, think of how serious it is. If you were a tv producer who had to travel and edit on the go, or something similar, that would have been well spent money.
But otherwise...
Take into account that laptops are not upgradeable, so in 2-3 years time it would be obsolete and you'll be looking for a new one. Will you be able to buy a new one? And sell this one? Also, laptops are worse than desktop PC's when it comes to price vs. performance issue.
My advice is to spend your money on a state-of-the-art desktop PC. You can buy a lot of horsepower in a desktop if you have money for a laptop. With a smaller case and an LCD monitor, it shouldn't be hard to carry it around either.