Should I join the Academic Decathlon team?

Ok so basically I am a sophomore and its getting to the point in the year where I have to apply to programs for the next school year. My issue is that my school offers an AP Capstone program and an IB program. While the IB is more rigorous (I think) I can’t do the program and join my school Academic decathlon team (my school is the reigning national champion for like 7 years except for 2014) at the same because I wont have enough time to devote to both and it will be too difficult to keep up with both. Also, if I join the acadeca team I probably won’t have time for other extracurriculars because its extremely time consuming. So I guess my question is, is it worth joining my schools acadeca team but not doing IB and doing Capstone instead? What would look better on college applications?

You should choose the program you most want to do. pretend you never had to apply to colleges. You just get to choose which of those you’d prefer. That is what you should do. Read this even if you would never consider MIT-it is great for any student: http://mitadmissions.org/blogs/entry/applying_sideways

Granada Hills??

GPA/Classes > ECs
I would first choose academics then ECs.