Lighting, Light Fixtures, Ceiling and Exhaust Fans - How to wire home-made track lighting made with puck lights?

I would like to make my own five-light ceiling lamp using halogen puck lights and copper tubing to cover the wires. I cut four two foot sections of copper tubing and I joined them with copper tees. At the end of each tee will be a puck light held by copper wire (so that I can turn them in different directions like track lighting). The puck lights come pre-wired with stranded lamp cord that is about three feet long.
What would be the best way to wire them all together? Will I be reduced to running five wires all the way down to the outlet and having five plugs at the end, or can I wire the lights together somehow?
Renee