I was looking at installing cruise control in my car that came with absolutely zero factory options. It's a 2000 so it has the throttle by wire system so i'm thinking all I need is a new turn stalk with the switch and the switches for both my brake pedal and clutch pedal. Am i missing anything?

 

You may just need the cruise switch as it is just a handle under the wheel.
The harness goes through the column to the unit,
Be sure you route the cable through the proper clamps as turning the wheel will let you know how much smoke was packed into the wires...
You might buy a Haynes manual to help install for reference.