Pick whichever one of the prebuilts (Marauder or ODE) you want to pay for. ODE will have an OC and a little better components, but price/performance is best in the marauder. Basically give us a hard budget and we can pick out the best one given the constraint.
The 60gb SSD i'd just buy later and add as my boot drive, its more of a luxury for fast boot times. If you rarely boot/don't load games a lot, its value is lessened. It can however increase performance in sandbox type games, but for Blizzard games its negligible.
You can easily max out d3, WOW, other normal games on ultra. BF3/recent first person shooters will take an SLI solution.
And 10-12 hours a day gaming in the summer? Your parents are nuts unless you have some sort of disability. Don't spend college the same way.