Do you know that Phototshop Elemeents practically does not use the GPU?
In my opinion you should rather care about RAM size (the minimum specs are really minimal).
If you want to use a laptop with a small SSD drive (less than 250 GB) it also should have another internal conventional hard drive to store your image files. A bigger SSD drive will also provide fast scratch disk space. That's where you'll notice the best gains in speed for both the editor and the organizer.
Apart from playing videos and a couple of editing effects, you won't notice a difference from the GPU.