Creating keyboard look controls?

I would like to create a set of keyboard look controls to be used rather than mouse look in my first person project.

I'm planing to use shift+WASD to control camera/character rotation. As in shift+W would have the camera look up and so on for the other corresponding shift+keys.

What would be the best way to script this and set this up within unity? Should I use javascript or C#? How would I best implement this with the input manager?

Any help would be greatly appreciated. Thank you. :)