I know you said you are getting the mil eliminators, but do you have a handheld tuner (SCT or Predator)? The only reason I ask is that's usually the first thing people get and you can turn it off with that, so there would be no need for the mil eliminators.
Install is very easy, I did mine backed up on some Rhino ramps. The only thing to watch for is have someone look at the tail pipes and make sure they are lined up before you tighten down the clamps. Also, I haven't welded the clamp in the middle and I have no leaks either. I just tightened the crap out of it and it's holding just fine.