I am using the NX crossbar single entry plate. With a trashcan and an NX .310 fuel solenoid. It was flowed by PKRE . THe Holey Moley is very similar to the NX plate. Im using a Holley Dominator ECU for the ignition and to control my nitrous. WHen your looking at progressives see if you can get one that controls the nitrous and fuel independently. That helps a lot when getting to larger tunes to keep it from going lean early into the run.
Definitley think things through, dont get whats "good for now" as honestly the better stuff will work and give you room to grow later on.
Good luck sounds like a great plan , and soon youll be needing MORE rollcage..LOL

Chuck at Best is also a great resource for sure, as well as an INDY dealer