Good pick on the SSD's I guess. I've had to deal with one of SSD's from Kingston couple of years ago. It kept throwing in BSODs even after I updated the firmware, so unplugging it was the only options. I've got other SSD with Sandforce controller as well, from OCZ, and it's running just fine.
With that kind of setup, make sure you get strong enough power source.
If you are not gonna run simulations over night, then you should not be worried about ECC memory. It would just slow your computer down, and the SSDs would not shine that much. Regular DDR3 RAMs with 1800 MHz are good enough.
I also got Xeon E5-1620 3.6 GHz processor as mentioned above. They say Xeons are good for servers, but if your PC is gonna be abused alot, then why not buy a Xeon for it instead of i7.