RAM should be fine. Higher clocked RAM tends to run hotter, if anything 667 is better. Only thing that matters about RAM clock speed is that it swaps as fast as the amount of RAM there is (for example, if running 4GB RAM it should run at >4GB/s bandwidth at least). The 667 RAM modules run well above that (5.3GB bandwidth speed) so there's no need to go for any faster RAM. If he should worry about anything memory related then it should be 1. The manufacturer of the RAM and the model as well as 2. Their latency.
P.S. one other thing I'd consider would be changing the HDD for a cheap low-end SSD (30GB-64GB) as one thing I've learned from experience is that the 2 things that are most likely to fail in a laptop are the fans and the mechanical drives. If I were you shakenbake158, I'd also run a benchmark on that thing and see what temperatures the GPU & CPU hit.
Thanks for the advice, also is there another laptop you would recommend for gaming, that could play mostly all games on at least low settings, give or take $150?