My sump

[BCWolfen]

Hey folks

I wanted to run my sump design past you before I sent it off to my arcylic folks to have it built.
Excuse my crappy picture and try to follow along LOL

Its being built out of 1/4" acrylic.
The sump itself is 30" x 16" x 16". The baffles are all 12" tall. This works out to 25Gal of actual water in the sump.
Actually a little less as the return side will not be at 12" of water. The tank can hold a total of 33 gallons.

Area 1 is the return. It will have my 2 heaters on the bottom and also, will have my auto top off float. It will be 8" wide and will have the intake for my main circulation pump.
(Need some help sizing that too. 25 Gal sump, 90 gal tank 33 gal refugium Whats a good size pump)
It's baffle is 12" tall but has another 1" of teeth to keep macro algea and snails in the fuge.

Area 2 is the fuge. It is 12" wide.
It will have a DSB some LR, macro algae and critters
(I will eventually also have my 33 Gal as a viewable fuge with mangroves and cool stuff)
The bubble trap before the fuge has 1" spacing between the baffles. The top down baffle stops 1" of the bottom.

Area 3 is the intake, my overflow will spill down into here with a T to help air go up and water down (keep noise down).
It will be 16" front to back x 9" wide The Skimmer is 6.5" wide x 12" long (to front of valve)
That leaves 4" between valve output and front pane of sump.
The skimmer will sit in the back corner with its output facing the front. I was planning on just putting it right on the bottom, after further analysis I assume it has to sit as high as I want the water level in the
clear pipe to be. So if the water in that section is at 12" I'll have to raise the box up some to get the water line say 1" below the gasket to the collection cup? See my 2nd pic. Is that correct, or is the water level in the skimmer more controlled by the amount your valve is opened.
Now the intake for the MAK4 for the skimmer will be near the bottom of this section near the rear of the skimmer.
Will the mak4 push too much water? ie will the jet of water coming out the ball valve be so much that it will push too hard on the front of the sump, burst the seam?? Should I put a 90 or 45 on that outport and angle it towards the baffle or the floor?
The sump it pretty much at its max size to fit under my stand.

I think thats it. Any thoughts/ideas would be appreciated.