When starting my freshman year, should I take intro courses in various subjects?

Yes I would advice that, this will help you identify your strengths and your aptitude. even though you may have a preliminary idea of what you want to do with your life, this is a good way of getting the right direction.

Hi Alec,
I definitely can sympathize, because I wanted to design Boeing planes. But as I looked out the window, this power kept pointing me south not west. All my attempts to apply to Washington flew away. Mom mailed my application to LaVerne College where I was confused for a year about what was my career? She said... teaching English. A year later, a bold, brilliant, beautiful young lady surprised me in the forest to say, "Thank you for coming. You'll experience your spiritual quest, then write scripts about every step taken". Forty years later, I don't deny that as the truth. So enjoy taking those intro classes, and be prepared for your guru, your chief, your queen, a little girl... the dragon to confirm what's deeply haunting you. Best wishes.