One thing I might suggest reg mice...if you run wires through the attic(unfinished attic), run them on TOP of the insulation, not underneath it. Mice tend to get underneath the insulation for warmth in the winter weather (against your ceiling) and the same in the summer esp if you have air con, from what I've seen of the little b*ggers. Nothing a couple of peanut butterized traps won't take care of.
Don't be concerned about the difference in length of the wires, it won't make a difference....(let the jokes begin)....

Half of communication is listening. You can't listen with your mouth.