Hey! Does this mean you're going away? Or are you already away? Never-the-less, I'm in.
For random number generation, there's nothing better than random.org.
Or you can just use this: 4
I guarantee it was chosen completely randomly.
That's what I'd get if I had a $500 budget and could fudge a bit on shipping, and already had a monitor.
You can also not buy the videocard yet and use onboard for now and order a beast card later. That power supply will fuel just about anything you'd reasonably throw at it.
This is how I do my idling. Can't remember who I got it from, but you can make a shortcut that allows you to idle in offline mode without using up a lot of resources. Just use "F:\Games\Steam\Steam.exe -applaunch 440 -textmode -nosound -nopix -novid -nopreload -sw +OpenTrainingDialog" without the quotes and with the steam location set to where your's is at.