? on overflow box and return pump for sump

think I finalized my design to maximize the area of my sump without overflowing but am trying to figure out what pump and overflow size to go with.

I'm thinking I don't need too much flow since I have 2 Koralia#3s in my tank. Also, the skimmer section is high because I have a HOB bakpak.

My tank is 55 gal. and my sump is from a 20L gal tank.

Here is what I'm debating:

Eshopp PF-300 (300 gph) overflow with a mag MD5 (310 gph at 4ft) or MD7 (450 gph)

or

Eshopp PF800 (800 gph) overflow with a mag MD9.5 (800 gph at 4 ft) or MD12 (1100 gph)

Any suggestions on design overflows or different pumps would be greatly appreciated. Thanks

 

hey there
good design sump/refuge the only thing id change on it is getting rid of 1 of the hose lines to the refuge, id just use 1 of the lines and add a restriction tap to keep the flow very low other wise great design

 

Thanks. Would the Eshopp PF-300 and MD7 be the best option or is their a better pump. I've heard that the mags get hotter than others and are more work to clean. I just don't want to spend more than $100 on a pump unless I really had to.