It's lookin' great! For great performance, after you've got all the parts you need and are willing to spend some money, an HD upgrade may be worthwhile. They 15 and 17 inch PBs look very easy to get into by looking at
www.ifixit.com guides. And also, thermal paste. As gavinstubs09 said, it does help reduce temps. For a suitable laptop, thermal paste should be replaced every 5 years. Of course nobody does that, but it certainly will reduce temps several degrees and will make a difference especially under Leopard.