Unless your doing some very CPU demanding work then I doubt there any real life gain from a 2670 -> 2760 -> 2860 really. If your after a gaming laptop I would upgrade the GPU to a 6990m and drop the cpu back to a 2670, this should give you a huge boost in games with no real cpu lose.
Spec looks perfect only 1 thing is that you could save a few pennies if you go with the 1333mhz should see no difference. SDD + i7 + 6990 will eat up your photoshop and gaming needs and still have plenty left to give .