OP, I would suggest changing your thread title to "help me build a $1500 rig" so you'd actually get advice on the component list instead of everyone telling you to not spend $5k on a computer.
For your purposes, that's plenty to spend on a computer, especially if monitor/mouse/keyboard are not included.
To be honest though, since you have the money, I'd upgrade the monitor to a Dell U2711, and get a nice mechanical keyboard like a Das, Deck, or Ducky. These Devices are how you interact with the computer and you'll use them every single day. Every product I named above are money, you won't regret buying them, trust me
Bank the rest, and upgrade your computer over the next 2-3 years as components become obsolete. Basically add RAM and HDD, and replace the GPU (sell old one) in 2 yrs and you'll be fine.
A word on the case and the cooler: I'd recommend a nice air cooling case like the Silverstone RV02 or FT02 since you're going with air cooling. They are cool and quiet.
For the cooler, Thermaltake Silver Arrow, Archon, or Noctua NH-D14 are top end, but go w/ the Archon b/c the other two will make it hard to replace/add RAM.
Don't worry about sealed water coolers leaking, they're well made and Corsair at least have very good replacement policy. Get a H80 to go w/ the cases mentioned above, and a pair of nice fans like the Gentle Typhoon AP-15, and OC your CPU to 4.5ghz+