Hi Daniel,
Good luck with choosing your subjects. I think if you include physics and maths methods it will help you for getting into uni and also into airlines.
There are some good uni courses in Aviation, and it is not a bad way into the industry. They are all designed for someone straight out of school, with no aviation background.
If you want to be a pilot, the uni courses are one option. Other people just select a flying school and get their licences, others join the military, and others gain a cadetship through an airline. A word of caution, if you consider a cadetship, there are some really terrible ones out there at the moment, and you should have a good read of these threads to find out why.