Alton is pretty close to being realistic.

If I had to set one up today I would I would do a 24" x 24" tank put a full length overflow and drill tank on bottom. I would run an external sump with an elevated fuge. I would do it this way so that I can double my water volume as well as have a larger display. This will also allow you to run what ever parts you want and they will be hidden in the cabinet. Again, this is just my opinion.