I think I'm going to go with two maxi-jet 900's.
One on either side. I'm not sure, but I may want to add another hole or to for more output nozzle locations.
I couldn't easily find black acrylic so I painted this stuff with Krylon Fusion.
I did a test run with the pumps I had laying around, a MJ1200 and MJ400.
The 1200 was a great amount of flow, yet I'm getting worried about the heat it puts out, hence the 2 x 900's.