That's a pretty good spec, but the Tri-core 720 will beat the E8400 in almost all cases, plus, I included a CPU cooler, which will help you overclock the chip, or at least keep it cool.
The F1 Spinpoints are a better choice than the Maxtor drives, because I believe the F1's are single platter drives, and the Maxtor drives are double platter (basically, single platter means 500GB on one disc, rather than 250GB per disc, which means higher density and faster reads/writes). Plus, the F1's are supposed to be more reliable. The 32MB cache means very little in real use.
Case and PSU is fine, you could change that if you like, depends if you prefer the look of the case, and the PSU is a great alternative (maybe more reliable than OCZ actually).