I always see monster builds with everything done at once. At least it seems that way. What are your plans if you dont mind sharing. With the dual pumps id say your looking at up around 700whp. I would say go with the MSP Mani's and selin dual maf. It would make no sense getting anything other than ASH spec intercoolers when your planing such high hp goals.
"torque gets you off the line...& hp gets you over the line." - TTKeeper