Shao, if he has room for the skimmer and return together in one chamber, there's a chance of micro bubbles ...

Another option would be to use a HOB 'fuge with a powerhead or such to fill it. A small 'fuge would be easy to clean out when removed thus elimating a messy sump cleanup headache
With this idea, trapezoid is tank drain ( and socks if desired )
Left is skimmer and right is return
No baffle mods needed

Was thinking that a HOB fuge would be okay and resolve a lot of issues. If not I think I am gonna have to add baffles and that might be more trouble then it's worth. I won't put the skimmer and return in the same as I don't want to run the rail of micro bubbles.

depending on clearance in stand and your skimmer...
would you be able to have your skimmer in section 3 positioned so the output goes over the back baffle, back into section 1, where the display tank drains? eliminating the issue of micro bubbles.