It's all well and good that you believe that you're a really narrow minded person, but as has already been said, breadth is designed to make you try new things. To try to cheat the system and find ways of avoiding that is really to cheat yourself.
There are breadth subjects that incorporate elements of science into them, specifically the Uni Breadth subjects, and some arts disciplines such as linguistics are relatively scientific in nature.
I don't mean to discourage you either, but it is a really bad idea to be so cocky that you'll find science such a breeze. It is not a breeze at all, and even the Chancellor's scholars struggle from time to time. I have friends from all ends of the ATAR spectrum at UniMelb, and all of them find it a challenge. It's also worth saying that ATAR hardly correlates to achievement at Uni. There is no such thing as breezing through any uni course, and if you feel that that's what you're doing, then you're wasting your time.