Looks great! Adding is a switch is a great idea. I

 

Are there upgraded/improved lights that can be installed in place of the factory light fixtures? I certainly want to increase the amount of light, but want to try utilizing the factory positions first.

 

Part of the problem with the factory light locations is that they are positioned too low. As soon as you load a couple of suitcases or duffle bags, the lights are almost useless because they are either blocked, or just unable to light the cargo area because the light cannot reach the top of the loaded items. Ideally, a light from the ceiling is what you want…shining down onto the cargo (like most vehicles…hint hint JLR