You fish only or reef? Circle flows are not a favorite of mine. Most go for 2 phs pointing right at each other so that a more random, crashing flow occurs. It's more natural for a tank to simulate reefs with random water flows. Healthier livestick that way IMO
. Put those two ph's high enuf in there, and they will also take care of the surface ripple you want.
Maybe the smaller one in the back of the rocks to keep junk back there suspended and able to get into the skimmer or filtration. I'd do the larger two (is that 820GPH?) opposite each other, maybe about 1/3 down into the tank with the flow crashing at the front of the glass. Maybe put those two on a single power strip so you can shut'm down for feeding.
BTW, are those PHs rated at the #'s listed? 820 gph
and 600? Or is it half that? If half, that'd be a 20x circulation rate which is good. 40x sounds like a lot.