10 years long enough for UFC fighting?

I am starting a intense training routine very soon to pursue my dream of being world welter weight champion. I will be taking Kickboxing, BJJ, Karate, Judo, and Submission wrestling. These will all be taken on different days of the week of course and I will be traveling to each of these places to train each individually. I plan on training 6 days a week, on this plan changing out one day a week for extra training on whatever area I am weakest in. I plan on competing around my early 20's to late teenager years. Then at 25 I will take my shot at the UFC... currently I am 15 years old... What is your thoughts on this?