Go dominator and do not look back, the HP just doesn't have enough outputs to run everything that you would want. Also if you go 80e down the road the dominator is already set up to control that as well. I have a dominator in my truck and have seen many guys complain about the lack of outputs from the HP.
For example I have flex fuel, 2 step, boost, 80e, all setup to through the dominator and have a ton of outputs that I can still setup. If I was on the HP it could not run all of those.