I don't know if I can do two durso's, have you seen the way that Lee-Mar makes their overflow? smaller than normal, in any case, pvc is cheap, I will try all of them...
Also sometimes it loud cause the water falls to far before draining. I can take a picture later of you'd like.
If I an get it right with one overflow, you can do
It easily.
I also use a flex vacuum style hose for the water to drain into my sump at the height I want. I don't like the water fall sound in my living room.