Going to college is a major investment that you should definitely plan for -- if you can work out the financing to go right after high school -- and you're ready and excited to go to college -- that's great. Waiting a year or more is also a good plan if you will be better prepared financially or otherwise.
I went to college 2 years after high school, and it was the best decision I ever made. I used the time between high school and college to travel and work -- in fact, one professional experience I had before college turned into my first professional job after college: I was a writer for Prudential before college and later hired as a publication editor after college. Ultimately, I became a communication consultant and have worked for many Fortune 500 companies in the past 25 years.
In addition, the time I spent working and traveling before college made me a much better student -- it prepared me well for the application essay and all of my early coursework -- I earned straight As my entire freshman year and wound up earning an academic scholarship that paid for my last 2 years. So the time off before college was a great investment in my future success!
Best wishes for your success!