setup for 48" bowfront

I'm setting up a 48"x18"x 26" bowfront (center of tank bows out 26") this tank will be sps only with a sea swirl and two surge towers I need some extra flow to cover the lower half of the tank and behind the rocks.what tunze setup would be the best?
 
The ultimate would be 2 6000 and a 7095 but one and a 7091 would probably be sufficient.
 
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