I believe I spent a good 6+ hours on this project, but I'm really happy with the results. I even installed a USB hub near the front of my desk so I can plug in extra equipment easily.
When it's all said and done, I spent only $30-40 on supplies (zip cables, 2x4 pegboards (x2).
Step 1: Attaching the pegboards
Step 2: IKEA SUMMERA computer holder
Step 3: Pegboards attached.
To have maximum separation between the left and right computer speaker, I set it up prior to installing the table top. In hindsight, this wasn't such a good idea: if I want to switch out my speakers, I have to either cut the speaker cable or unscrew the desk top in order to remove them.
Step 4: Underside of pegboards
I daisy-chained two power bars. Each white power bar is connected to a black power bar, which in turn is plugged into a separate wall plug-in as to not blow a fuse.