does age matter

I will be transferring to UCF in the fall and want to rush but I will be 20. I was wondering how hard it will be to get into ZTA and KD. Those aren't my only options I am going to keep and open mind for all but those are just the two I know the most about and really like. I will also be in school for three years but still might be a "sophomore" technically. If I were a junior would it really make a huge difference as well?