That plec looks really cool. I was told though that the fancy ones tend to hide most of the day and come out at night. In which case you wouldn't see it much. I could be wrong but that's what I was told by a reputable LFS, and for the price they are I thought I'd rather get something I can see ALL the time. :bggrn:
By the way, your tank is looking way cool at the moment. That background is spectacular.
Oh, and what SamH said, A big group of small fish swimming in a school is way cooler than one big fish IMO. The Emerald Eye Rasbora is very good at maintaining a tight school, and could look quite good in your tank with their bright glowing eyes against your background, swimming back and forth. They hang around in the upper region too leaving plenty of room for bottom dwellers.