If you can wait, Hitachi will be releasing the 7K200 series early next year.
It has the best of both worlds, perpendicular recording (higher density platers) and 7200RPM spindle speed.
200GB will also be the flagship capacity.
Download and install Notebook Hardware Control.
You can tweak the voltages and video card settings using that tool. It is EASILY good for an extra 15% of battery life.
You will need to stability test your CPU at EACH AND EVERY voltage...
Heck man, you have his address.
For that much money I and my friends Smith & Wesson and Glock would be paying him a visit.
PM me. Dad used to be in law enforcement in TN. He may know someone to steer you...
Bal'thzar is TOP NOTCH. Unfortunately NBF has recently removed all reseller's threads and looks like they may have disabled his PMs.
If you can get in touch with him, he is a GREAT guy to do business with.