What parts of the Office suite do you need though? If you just need a word processor, and you're going to have to suffer through Rosetta for some time anyway, you might as well still use Abiword. At least when that's universal, it'll still be free.
It would be pretty bad if Microsoft charges the regular upgrade price for the universal binary crossgrade...
As I said last post, iWork is already Intel-ready, but Pages is still quite different in the way it works from other word processors and you might not want to have to adjust to it...