I think you should do what you like !!!!!!
Regarding the soft subjects, I dont know how IB works but most applicants probably have no/one soft but since both business and art are non-preferred subjects.....
If you reallly like it then just apply for it. If you dont get in, then at least you will know you tried. Thats so much better, than not trying and regretting it for the rest of your life and constantly thinking that maybe you could have gotten in if had you just applied. !!!!!!!!
Good Luck!"!!!!!!!!!!!! ~~~~~~