I'm about to order my first mac. A 14" ibook 1.2GHZ,Superdrive, 60 gigs, Airport Extreme built-in, and 256 megs of ram. I plan to use this for internet, email, watching dvds, microsoft office, garageband, itunes, iphoto, and for occasional dvd burning. Is 256 megs of ram sufficient, or should i upgrade to 512 megs? Also is bluetooth worth the extra 50$???