RE: Increasing KE
Assuming you do NOT want to reduce arrow weight, which wouldn't help you gain ke anyway, I think about the last thing I can think of is to remove the peep and go peepless, either by tying a piece of colored thread onto your serving that lines up with your pin to get you in the same anchor, or better yet install a No-peep.
Taking that peep and tube off your bow will definitely let you pick up fps, how much remains to be seen, but I'd guesstimate 5-10 fps.
Pulling 80#s to get 55# of ke? Not trying to be a smart $*&, buthave you put serious thought into a new bow? This strikes me as a bit outdated given today's technology. I'm pulling 70# with a 28" draw and am getting around 74# of ke...