Do I look for a single developer as smart as Sergey and Larry or partner with a company to build it? Need help in building on the idea.
Designing search engines is about more than skill. It's an act of war. You're invading the country of Google + Microsoft with your team.
Even with the best minds at your disposal, they won't have access to sufficient infrastructure and data to get off the ground -- not without piles of money. And you'll be competing with the biggest companies on earth -- companies that employ armies of highly paid engineers, dominate the market already, buy up patents to cover everything under the sun, and who can afford to throw millions at an idea ... or to crush an upstart.
You'd want to be VERY sure you can conquer that country before the invasion.