$50 CPU Cooler, for the price you could get a Xigmatek Dark Knight or maybe a Scythe Ninja. But if you have a 1366 CPU I would probably get a big expensive cooler like a Noctua D14 or Thermalright Silverarrow or Archon if you want to get some decent overclocks.
Also how did you get 9GB of RAM? Dell actually sell 3GB sticks? Because the weird RAM might lead to motherboard issues. Also since you're using Dell RAM (cheap brandless) you won't be able to get a good overclock out of it.
Motherboard, the UD3R is good, but I would suggest an ASUS Sabretooth X58.
In regard to the graphics card the GTX560 Ti is a great choice.
Also what 850w PSU are you getting? I would recommend an NZXT HALE90 850W or any PSU from Corsair or Seasonic.