I like the modular PSU. The case is definitely a beautiful one, I am building a mod for my wife with this, but understand that cable management is limited. Not such a problem for a modular power supply, but still be aware of this case's limitations. It is a few years old now, and most newer cases have better cable management and more forward thinking features in that price range.
BTW, you are gonna love the Death Adder and G110, I got both for my wife and she adores them.
The speakers are woefully inadequate for my tastes.
The velociraptor was a good drive in it's day, but a SSD is about 50x faster in random i/o, and that is what the os does mostly.
Considering the high hard drive prices of today, I would suggest a 80-120gb ssd for the os and a few games. When hard drive prices come down to normal, get a 1tb drive for storage and overflow.
Intel has a nice rebate on their 80gb drive which will cost $80 after rebate and promo: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
FWIW I use 85gb of a 120gb ssd which has the os, 8 games and 4gb of photos.