Lighting, Light Fixtures, Ceiling and Exhaust Fans - Installing Low Voltage Pucks in Ceiling Valance

Want to install 3 Xenon pucks (daisy-chained) in a 6" high wood valance over a planned built-in bench seat in our finished basement. Chose to build valance to avoid ceiling drywall work. Current switch is double-gang for light/ceiling fan fixture. Current fixture is light over pool table with no ceiling fan. Currently in planning phase.

Question 1: I would like to wire nut the unused CF wire and use the switch for pucks. Is the ceiling fan switch a special switch for ceiling fans only? If so, are there any circuitry concerns to replace the ceiling fan switch with a regular light switch?

Question 2: Is it OK to leave the unused CF wire in the walls? If so, should I leave the wirenutted CF wire in the box?

Question 3: What is proper installation for connecting new pucks to existing unused ceiling fan switch? Need to understand how/where the transformer should be installed - is it OK to sit on the wood valance or should it be attached to a stud in the wall?

Question 4: Should I be concerned about IC vs. non-IC pucks? I know non-IC types of fixtures are used frequently under cabinets, so I probably shouldn't be concerned about heat, but would like to make sure. Dont want to burn down the house!

Sorry for the length ... your advice is greatly appreciated!

Why didn't anyone answer? Too many questions? Wirenut1110, where's the luv?