Yeah, extra RAM is worth it. also you'll need to factor in a decent cooler into the price. Laptops with dedicated graphics get VERY hot. like bordering on shutting down automatically.
And a low end cooler, 20 bucks or so wont do it. Hot News - Cooler Master NotePal U3 - Cooler Master - Leading Provider of Computer Case | Cooler | Power Supply
this is what I have, its not the best but its not the worst, 3 very fast fans that blow very cold air, and you can resposition the fans where you need them the most on the chassis, which is a godsend.