I had to vote option 1 because you'll need all the cash you can get starting up a business. Once you have an established, successful business, you can buy anything you want.
Don't think that when you get older that you won't enjoy "kid" stuff any more. Age just gives you perspective, the "kid" is still in there.
If you do go for option 2, I would get this:
http://cgi.ebay.com/ebaymotors/Lotus-Esprit-V8-1998-Twin-Turbo-All-Services_W0QQitemZ160371520509QQcmdZViewItemQQptZUS_Cars_Trucks?hash=item2556e333fd
A "real" super car. I've wanted one of these for years and I'll eventually get around to getting one...