SWA PreReq's
Also, make sure you have your 4 year degree and build a solid work history and reputation. SWA will be very interested in what previous employers/coworkers think of you - take any job you get seriously enough to do well at it (including being a student) but not so seriously you don't have fun! Especially flying jobs, this is a great bussiness and if you can't have fun towing banners, treaching stalls, etc then you'll find that the destination isn't worth the trip. If, on the otherhand, a C-150 flyby gives you goosbumps, you'll be flying Shamu before you know it!
Good luck! Fly safe!