I cant really see you needing anything more thn 150GPH for anything. A 3600 hp cat 3524 engine uses 150 GPH full load. We wil never be close to that ever.
I would think the airdog raptor would be fine. I run this with my current setup and hold 25.5k rail pressure at over 3000PW at the end of the track. The airdog comes with everything needed for install which to me made it a better value than PPE's lift pump. I didnt want to go through the hassle of tracking down all the other little components needed.