plumbing advice needed

[habs247]

Hey everyone,

Also posted this on RC. Any help is welcome.

Looking for some advice on how to plumb my new tank. I plan on using Herbie's method on my 110 gallon. The tank is a custom rimless build and I've asked for three holes to be drilled in the right corner overflow: the main drain (1"), the original return converted to an emergency drain (3/4") and an extra hole (3/4") I requested that I hope will accommodate my return pipe but still be hidden in the overflow box.

Does this make sense? I didn't want the return pipe to be behind the tank (not enough clearance) or beside it (a bit of an eyesore), rather, to be hidden in the overflow. I hope this will work? I then figured I could use an elbow or two to get the pipe to clear the overflow box to allow flow back into the tank...or is there a preferred method to return flow into the tank?

Also, do the sizes of the holes drilled appear correct?

Thanks in advance.