Laptop Critique for WoW/TOR

I'm considering the following laptop to replace my current laptop which only has a Radeon 4200. I play WoW on low settings on this laptop. I'm looking to be able to play with settings turned to high/ultra (except shadows which I always turn to low even on my gaming rig). My primary gaming rig is my desktop for sure, so this is only for when I feel like being in a different part of my house or the occasional road trips. I ONLY play WoW but want something that stands a chance at running TOR whenever it comes out.

This laptop is very cheap ($500) and some of the reviews are saying people are playing Rift on ultra settings with no problems. I will say that right off the bat I will purchase an 8gig RAM upgrade so ignore the RAM spec below.

CPU Type
AMD Phenom II Quad-Core N970 2.2GHz

Screen
17.3"

Memory Size
4GB DDR3

Hard Disk
500GB

Graphics Card
AMD Radeon HD 6470M

Video Memory
512MB DDR3 VRAM

CPU Type
AMD Phenom II Quad-Core

CPU Speed
N970(2.2GHz)

CPU L2 Cache
2MB

Chipset
AMD M880G

Screen Size
17.3"

Wide Screen Support
Yes

Resolution
1600 x 900

LCD Features
LED backlight & Acer CineCrystal Technology

Graphics

GPU/VPU
AMD Radeon HD 6470M

Video Memory
512MB of dedicated DDR3 VRAM

Graphic Type
Dedicated Card

Hard Drive

HDD
500GB

HDD RPM
5400rpm

HDD Interface
SATA