I'd really recommend a custom cam. Hydraulic rollers are kind of pricy, and its really not much more at all to have Comp grind one to your specs....
You need valve springs if you're running a cam. The magnum stockers suck.
I can't imagine what shipping to Hawaii would cost, but those Iron Ram heads will make more power, and even with shipping should be a good chunk cheaper than the Edelbrocks.
Good luck!
Steve