will this sump/refuge design work

[ludiNano]

Ok so the pic is very crud.....

The 29g display will have 5''x5''x5'' overflow box from austinoceans.com w/ 1'' drill. And will drain behind a thin wall in basement to sump.
The sump, a 20g long, will house a octo PS-120 that will over flow to the main area that will house to pumps. One that will pump water up to the refuge and one that will return it to the main tank.
The refuge, a drilled 10g, will sit above the sump. It will over flow back to the sump and be returned to main tank by a Reo 2500. The return will come back up into the overflow box an exit out an educator coming off overflow box bottom.
I was going to just have this all in one tank, but i thought i read that its better to have less flow in the refuge than a drilled tank will put out ( 600gph 1'' drill) and i could control it better. (any suggestions on pump up to refuge 14'' up aprox.) And i found this cool L shaped stand, the lower part only sits 16'' off ground.
From what i can tell it should work the sump is below the main tank, and refuge is above the sump, but still below the main tanks drilled hole. I will have a few battery backups to in case the power goes out. The only thing i may add would be a couple over under walls in sump for less bubbles.
Sorry if its a little wordy but i will take any criticism you have to better this system. Thank you in advance.

[jun_celis]

I would just eliminate the pump to the refuge. Instead, I would suggest putting a tee coming from the overflow feeding both sump and refugium equally.

[ludiNano]

except the sump is running lenthwise away from main tank