75G WEIR/OVERFLOW PLACEMENT?

I know there are so many ways i can configure the in and outputs and weir placement..... BUT i thought i might asked what others have done. I have been looking all over the internet for idea but am not sure what will be best for me.

a few options i have come up with are:
-overflow in each back corner behind a cornered weir with one adjustable output in the center of the tank.
-in and outputs both in the center behind some type of weir.
-in and outputs both in one corner behind some type of weir

tank will have to be drilled thru the back of the tank, so the weir dose not have to span the full height of tank. Tank has a center brace and the top rim is pretty bulky. Not sure how much space i should give myself behind the weir for any type of cleaning.

I know this is pretty open ended, Any input would be great. I have not seen many plumed tanks in person, i bet that would help me understand it much better
 
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