New
#21
Here are some other reliable parts sources that may have other choices or lower prices:
Jab-tech
PC Mods, CPU Coolers, Computer Fans, Cables, Lighting, Sleeving, and more at the Lowest Prices! - Koolertek
Newegg.com - CPU Coolers, CPU Fans, CPU Heatsinks
I wouldn't bother with the "fan silencer".
The only advantage to 7 volt rather than 12 is lower RPM and thererfore lower noise and less cooling effect. I wouldn't bother with it.
Let me look at the Scythe you chose and make a later post.
Meanwhile, look over the other links for parts.