Entrepreneurship is an adventure! You're young yet, give it a shot, and you'll learn a lot. You're team may not be superstars, but if they have the drive to see the project through, and can bring your idea to fruition, it's worth pursuing.

If you feel your idea is a truly radical innovation, and you're willing to give your heart and soul for it, then it might be worth seeking out an ideal team. However, given what you've said, it sounds like you've made this decision on a whim. I'd say, go for it if it feels right.