Wow that's pretty cool Brandon. Very creative of you, too! I definitely like the double back-up light better then the original. Not to mentioned you just used a drill and a knife haha.
As for the LED tail lights, I imagine you could splice them in with the other running lights if you wanted to. Assuming they don't draw too much power, of course. I haven't tried this myself yet, so I don't have a detailed info for you, unfortunately. If you get it done, definitely post up some pictures, so I can see it!
Again, great job :bigthumbsup
Shane