WC is more of a hobby, not a performance thing. Ultimately you may get a FEW more fps, but I don't think it's worth all the money. Especially with DX11 along the corner (and ATI's selection already out).
An SSD literally brings your whole computer to life. My Windows 7 Ultimate with my mediocore T3400 CPU loads in just 16 seconds, including BIOS. It is the MOST noticeable difference a typical user can notice.
Sure you can enlarge one's e-peen with more Ghz and cores, but ultimately the user...
Any gaming notebook- don't expect to bring it to class. It's more of a desktop replacement or something to bring with you on vacation where you have a power outlet.
Don't expect to game more than an hour even with a 9 cell.
The 5770 is like a DX11 4870 I believe. I don't think you should drop $50 for the puny FPS increase. Why don't you leave yourself open to DX11 so you don't end up selling your 4890 later on just for DX11?