Looks really good overall to me.
A few things do stand out though:
-More RAM is always OK, but I'm not sure if anything much beyond 4GB is really going to be worth the cost.
- Unless you really need the storage space, I no longer see a need for the raptor SCSI drive....you would do better to get (2) 64GB MTRONs instead of the raptor and the (2) 32GB ones,....but maybe you have a specific need for these?
Hope this helps