Sauter, I feel the need to post this a lot: TheShark has 0 idea what he is talking about. He hasn't gotten an actuarial job yet. TheShark, stop being bitter and posting nonsense here. Your information is second hand at best.
Anyways, you already know the answer: statistics is more marketable than actuarial science. If you want to show commitment to the career, pass P, FM, and at least one of C, MLC and MFE before 1st semester senior year. Exams matter, any major along econ/stats/actuarial science/finance/math is fine. BTW, no matter what you do, getting into the field will be difficult, so maximize your GPA and get good at interviewing.
Who would win in a fight...Mike Ditka or a hurricane? And da hurricane's name is Ditka.