IIRC your motor is built a little better than stock correct? I think a Whipple, or Magnuson would be a more cost effective solution that would work with your EFI without any additions.
I'm investigating both options. The pre-eagle 5.7L i have is stock with the only modifications being an upgraded cam, opened ring gaps [for this very reason] and headers.
I figure a whipple would run about $5-6k, Hellcat setup is looking around $8500-$9000 if I were to sell the 5.7L off for a couple of bucks and add another 80-100whp I figure. The bragging rights that go along with owning a "Hellcat Cuda" is also appealing.
