I've got the 5650 on my myself, its a DECENT card, but thats all. Nothing compared to what i have with my desktop. Though i run everything at high except the water effetc with about 4x multisampling. Usually still on 60fps with vsync on. My laptop doesnt even have a processor as fast as the one you're planning to buy so you'd be good.
Though, everything you're listing there must cost quite abit so i'd suggest you go for a better videocard. You should go for one of the asus gaming laptops, they come with a gtx460. Though you have to turn in speed of your processor i think, and you'll have to do with less ram.
Theres also laptops of MSI coming with rather cheap models with HD5870M and HD5850M cards, which are doing great.