Good choice. RAM is cheap at the moment and a single GPU is always going to give a more consistant output than a multiple you graphics arrangement. Also once the Nvidia Kepler GPUs hit the market the price of 28nm GPUs will stabilise. Over the next few months AMD will be looking to reap the financial benefits of being first to market with 28nm GPUs. I would suggest upgrading your PSU before you start overclocking. I haven't seen any test results for the Jeantech but would suspect that it doesn't have the same quality of output filtering that a more expensive PSU would which does increase the risk of damage to the rest of the system if the PSU has a catastrophic failure.