With a carb, intake manifold selection is pretty important. For EFI, it's not nearly as important. With either manifold, you'll get good fuel atomization and good cylinder filling at low RPM's. Low rpm power will be pretty much the same between the two. But, the Performer RPM will run out of steam a lot sooner.
Of the two, the Torker II would definatly be my first choice.
Also, your head and cam choice needs some evaluation. Edelbrock makes some fine parts, and I'v used a lot of them over the years. For the average sligtly warmed over 351W, that's a fine choice; safe, reliable, dependable. But, for a stroker, that would not be my first choice.
More cubes make everything seem "smaller". Meaning that the extra cubes will make the RPM heads perform like the Performer heads. And the cam will perform like a cam 1-2 sizes "smaller". To feed more qubes, you need to move more air. You need better heads and "bigger" cam.
For heads, I recommend Dart Pro-1. reasonably priced, readily available, quality construction, and make good power throughout the rpm range.
For the cam, look at what Comp Cams offers specificly for stroker engines.