Hmm...I'd say why not? I mean, u still have os 9 on your internal, so if u get os X now, you can tool around with it a little, get used to it, so then you can know it well when u get ur next mac.

however, i would suggest waiting, say a month for panther to come out, so you have the latest OS. Cuz if u bought it now, u'd have to pay the 130 dollar upgrade fee.