Looks like a great build.
Remember if your drive is PATA the board only has one PATA connector, so
your going to have to do a master/slave setup with your drives.
I would look into a 7200.10 Perpendicular recording seagate drive
If you can spare a lil more money.
And if your looking to overlcock, the E6400 has a higher speed to start with an an additional multiplier