Wow, you know it didnt seem like that long ago but right after I posted that websight I went to visit it. They must have raised thier pricess dramaticaly. I rember paying no more than $50 bucks for my custom kit and now they are more expensive and not as many lights.
I will tell you another good sight for LED navigation lights.
http://lazertoyz.ncweb.net/RCLights.html
I went to this sight and they have probably pretty close to what you want and I think you can still customize a little with them. They are alot more affordable with a basic navigation set (landing, wingtip and tail strobe) for about $30.
David