I think you should not spend all 6000 on the computer
You can get a comparable computer for a significant amount less. If you don't want to build it yourself, I'm sure there are local shops who would love to help you put together the system for a relatively small fee on top of the price of parts.
building it yourself can be a very rewarding choice. Save yourself some money, learn from the experience, and brag to all your friends about how you put together a wicked system.
If you have tons of money, then what i might suggest is to buy parts for a "practice system". Take 5 or 600 dollars, put together a computer, take it apart, repeat until you got the hang of it, then you use the rest of your money to put together your dream system.