I would like to touch on a point that might have been overlooked.

He mentions that he will be using a laptop computer instead of a desktop. Whilst his system specifications are certainly powerful enough to run 3 clients, the real issue he is going to run into will be heat dissipation from his laptop.

The main problem is that with your HDD, GPU and CPU being pushed to their limits, I fear that your computer will overheat very quickly and run the risk of frying your GPU.

I would suggest you google your make of graphics card and find it's maximum temperature and the rule of thumb is (max temp - 30) = safe running temp for GPU

Secondly, make sure that when you play you either manually set your fans to overclocking or have a large amount of ventilation in your space, possibly with a portable fan blowing across your exhaust.

This will be the main problem I foresee with using a laptop computer