How you set up your textures/shaders is as important if not more important than your lighting.
To me a lighting kit just put lights into a scene very quickly. I still go through each and every light (by looking through them) and adjust the light settings and placement/pointing. Then I add lights as needed. Then I put in Uber Environment 2 which makes me have to check and tweak all my light settings again. UE2 accesses the render engine and gives you more control over the final output by setting how the light/shadows look.
Setting up surface tab - Depending on how far away your camera is you will have to adjust all the Bump maps. I would suggest adding UberSurface to the skin layers (once again, more control over how the renderer calculates the surface) as well as more important surfaces in your scene.
I like the Ironman13 lighting kit. Simple setups. But you will have to add lights to the kits. Any lighting you buy will most likely require you to add lights to the setup. Did you also change the rendering setting to Toon?