Hi Zainey,
your first idea seems interesting.
I would say, take a wireless mouse, disconnect the existing LED at the bottom and connect an infrared LED at the tip, pointing up. Use the "power-switch" - if it exists- to power the LED (meaning the LED is constantly lid when using the mouse). In the wiimote software, don't use the LED as click, but only as move. The normal click (left and right) and scroll-functions will still be available. Nice idea!
The second idea I don't quite get it. You probably need some other software to do that?
When I have some time, I'll try the first idea.
Bart