Overflow questions

Doing some advanced thinking/planning here and figured I'd ask a question that comes to mind.  I run a 40B with a 29 sump.  Works great, and is a good size for what I want.  I'm currently running with a coast to coast overflow across almost the entire long side.  It works well, can't possibly lose siphon, and can handle any water volume I throw at it.  It's great.  However, I'm thinking about moving the tank at some point, and would kind of like to set it up as a peninsula tank.  If I do, I'm obviously going to need to change the overflow so it's not ugly.  So, the question is... if I buy a new 40B and run a CTC overflow across the short side, will it pull enough volume to work effectively?  Has anyone done it?  The drilling and plumbing don't scare me at all, as I did my current tank.  Just worried about having enough volume in the overflow box and having it pull a large enough sheet of water off the length of the tank.

As a note, the overflow design is the BeanAnimal design, and I'll never go back!