HSF= Heatsink/Fan...the one that comes with the E8500 CPU will work fine and save you $49.99 for the Zalman.
LG and Lite-On are brand names of quality DVDRW optical drives. Either brand is a better choice than the Asus.
I would also suggest going with a WD Hdd (Hard Drive). The 640GB Black series has a 32MB Cache (faster) and comes with a 5 yr. warranty.
http://www.newegg.com/Product/Produc...82E16822136319
Seagate has had some recent issues with their drives.