Hi all, I'm seriously considering a mac pro, but I have a couple of questions: 1) Can Bluetooth and/or Airport Extreme be added later? I'd like to buy the stock configuration, but I don't want to purchase a dongle if I can have it internally installed. 2) Is it safe to buy? I know the 8-core models should be out soon, but I need one now, and I don't really need that much power in the first place. 3) What upgrades can we expect from new Mac Pros? New standard graphics? 2GB RAM standard? 4) If I go with the 7300 GT, will upgrade kits be available for graphics later on? Thanks for your help.