Is this play involving Red Eyes Darkness Metal Dragon & Lightpulsar Dragon valid?
This rulings page for Lightpulsar Dragon says:


  If "Lightpulsar Dragon" and "Red-Eyes Darkness Metal Dragon" are
  destroyed on the field simultaneously by the effect of "Dark Hole",
  that "Red-Eyes Darkness Metal Dragon" can be Special Summoned from the
  Graveyard by the effect of "Lightpulsar Dragon".[6]


And that is allegedly a ruling from an official Konami FAQ, though the link to it was broken.  

If REDMD and Lightpulsar Dragon are fine to combo in this way then I don't really see the problem with your OTK.  It's not like Lightpulsar Dragon isn't known for featuring in lots of OTK decks... anyone can just google it to see that!