I'd skip the CPU fan, as I mentioned the Core 2 Duos seem to run pretty cool, and the retail box version's included fan/heat sink isn't too bad, nice and quiet too.  Plus most of the cases these days seem to have a vent and pipe to bring cool air directly down to the CPU.  

I'd add a front case fan though, unless your new box already comes with one (mine did).  They help to cool the drives. 

I also went with the Corsair matched memory and the 7200.10 drives, which are supposed to be faster than the 7200.9 ones, a little harder to find, though.

The Lite-on DVD burners you had in your original spec are fine, incidently, I've got two of 'em.  I suspect all the DVD burners come from the same factory in China these days, they only change the front plate to make 'em Sonys or whatever...   ;-)