I just got a killer deal on the latest 15' 2.8 Ghz MacBook Pro. Core 2 Duo, 4G Ram. 500G 5400 Hard Drive. My question is; do I really need a 7200 internal drive as the OS drive for FCP? I will have a eSATA external drive for my video files. Do I spend $350 to upgrade my internal drive (authorized Mac repair, not to void the 3 yr warrenty) or do I spend that $$$ on upgrading to 8G Ram? Also I will not be doing any major editing... mostly 30 sec.-10min. web videos, no major effects, pretty basic stuff. Thanks in advance!