Imo, the Comp 294S solid cam would be waaay down the list of cams I’d use in that combo.
If you’re looking at stepping up to a solid lifter cam, I’d be looking at the two smallest Lunati VooDoo grinds, or a Comp xs274s or xs282s......... with the two smaller ones being the better choices for that overall combo(340, 2500 converter, 3.91’s).