The only comment I would make is Radeon HD graphics are very power hungry (c 10W), run hot, and halve the time between charges. If you want to use it on battery a lot you might want to find one with a less powerful graphics card.
My laptop has both Radeon and Intel integrated graphics. The IG are quite sufficient for good 3d performance with Kwin and I have to use a custom kernel and a modified laptop-mode script to turn off the Radeon which gives me around 7 hours on the battery. If I had one with only the Intel graphics I wouldn't need the custom kernel and script modification, but I didn't realise that when I bought it. I have also never got 3d to work using the Radeon, but yours is a different chip so might work better.
The one you're looking at has only the Radeon, so you need to consider how long you want to be on battery between charges.
Of course, if that's not an issue and it's a good price...