Welcome to the board! You'll learn a lot from here, I know I did.
I think you will find that the majority of people do all their pre-reqs first. For me, I have no choice because the program is so competitive that you have to have them complete to even have a chance of getting in.
A little advice, since you are just starting out and want to take it easy, I would reconsider taking two science classes off the bat. Those are both difficult classes so it will be like going to school full time. I'm taking Anatomy and chemistry right now (also english comp II) and it's kicking my butt. If I were you I would take one science and something easier like english, history, nutrition, etc..