Not knowing what kind of HP and speed your boat has I will say, with a good tight pump you'll be more than fine. Now if you're looking to split hairs/shaving ET at the track then yes go with a stage 3 blueprinted pump $$$
How bad are the inlet veins on the bowl, if rounded over you yourself can sharpen the (backside) of each one with a flat file.
Again...a nice tight pump with a good impeller is all you may need.
I'm real happy with my Aggressor Impeller since I started using it some 9 years ago..