Question about Wndows 8 Clean Install . . .

Quick question, when I go to download my copy of Windows 8 tomorrow, will there be an option to install it and not carry any of my files over from my Windows 7? I don't have much on my computer so I would rather have a clean install to clean my computer. I save everything to a cloud.

And another question, the computer I will be installing Windows 8 on is a Laptop, I don't have a mouse for it, should I buy a mouse or some sort of a track pad for it since Windows 8 was based around touch input?

Any advice would be appreciated. Thanks.