Dead right, at least consider your graphics card with the first bit of budget, considering it is one of the three most expensive parts.There's little point in getting parts with out knowing your full budget.
On the topic, my GTX 660 works a dream. Even a couple of years old, it handles new games at 60fps with all the sliders at 11, and i constantly run shadowplay as well.
I spent 800 quid on mine and its still going strong nearly 3 years later, getting exotic parts isnt really an investment for the present, its future-proofing your rig against the rapidly growing requirements, so it still works in 5 years