iLife and other bonus stuff only come with a new Mac, not with the OS purchase. The OS comes on one disk, which is in fact the correct disk to use. And since it's a Mac, of course it comes with all of the drivers you could even dream of.
I know iLife doesnt come with the OS purchase, but the iLife DVD comes with the computer. Im guess I'm just asking the devs if there have been any driver problems from fresh installing the OS.
Snow Leopard will include every driver you'll need for your MacBook. You won't have to install anything additional to get full functionality of the parts that shipped with your machine.
You will have to use your Apple Restore DVD to reinstall iLife '09 if you choose to "erase and install" Snow Leopard.