Four streams... overkill?

[GenWhoop]

My tank measures 48x24x30 150 Gal

I was looking at my tank and contemplating on purchasing another pair of 6000's. I currently already have two 6000's and
a 7095.
Currently, I have the 6000's at each corner of the tank facing the front of the tank like a large "V" .
I placed these at the lowest part of the brackets since it is a 30" deep tank.
Would it be overkill if I purchased an additional pair of 6000's and faced them like this: |---> <---| and placed them slightly higher levels?

I have a lot of softies, and will be placing some SPS in the near future.

Any suggestions??

The Gen.

 

[rvitko]

I might suggest a wavebox instead, they kick butt for softies and eliminate the dead spots and the flow effect boosts the flow of the Streams.