Look at Cooler Master Elite 335 cabinet with the PSU. It comes with a 20A rating on the 12V rail and is under 4k for the combo. Also, DDR3 and DDR2 now are priced similarly. So, get DDR3. Get APC UPS as already suggested. And if you’re getting Seagate, get the 7200.12 series and not 7200.11 which had firmware issues. I’d suggest getting 1TB instead.