My 23 gallon shallow AIO build

[chull13]

First let me start off by saying that I am going to need some major help with this as there are so many people on here who are smarter and more experienced than I am.

My goal is to make this a CLEAN LOOKING and simple tank (Hence the All-In One)

Specs:

Tank dimensions: 24x24x14
Display dimensions: 24x18x14
Sump dimensions: 24x6x14
Middle Chamber 12x6x14 (Cheato)
Side Chambers: 6x6x14 (Carbon on one side heater on the other)
Light: Tek 24" 4x24watt T5 Fixture
Flow: 935 gph (40 x turnover) Not all through sump!

I think my biggest challenge is that I want all of my flow coming from the back (no powerheads inside the tank) but I cant have all of the flow running through the sump so I want to build some sort of closed loop inside the sump.

Here are some pics of what I'm thinking so far.
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[chull13]

So the overflow on one end and the return on the other? I was going to use hydor flows for each of the returns to give the random flow. I had one on my last nano and liked it.

 

[chull13]

With the tank being 24" long I worry about having all of my flow coming from one source(one MP10). I feel like there would be too much flow in some areas and not enough in others. Opinions???