I'll ask you the same things that I tell anyone looking for a "gaming laptop:" How much do you think you'll be playing really hardware-intensive games "on the go," and are you willing to pay twice as much money for hardware that's half as powerful as a comparatively priced desktop to do so?
If your answers to these two questions aren't at least "very often" and "I guess so," respectively, then I'd strongly suggest just building a desktop and using the remainder of your money to grab a netbook for on-the-go productivity.
"'Casual games' are something the 'Game Industry' invented to explain away the Wii success instead of actually listening or looking at what Nintendo did. There is no 'casual strategy' from Nintendo. 'Accessible strategy', yes, but ‘casual gamers’ is just the 'Game Industry''s polite way of saying what they feel: 'retarded gamers'."
-Sean Malstrom
