Absolutely! I feel exactly the same. I'm still finding myself and until I do I don't think I'll be happy in a relationship. Not only that, I'm probably going to be quite high maintenance until I feel better about myself :)
I see nothing wrong with that decision. It means one less nail in the coffin {so to speak} whilst you worry about more important things, e.g. College, career, etc.
It is perfectly normal
It's awesome! I say - the best thing!