Preschool for 4 year old

    I am struggling with the choice of an academic preschool
    where my son is currently enrolled which has Spanish,
    science, math/computer, fun and fitness, and English
    lessons (with specialized teachers) vs a play based
    curriculum. Which is better or does it even matter? My
    son is extremely bright but I worry that it's a bit much for
    his age. He will be ready for first grade before he's 5.