I always prefer to start from scratch rather than upgrading - so yeah I think wiping your HD and installing a fresh OS is a good idea. It gets rid of all that crap you never use.
So... i've got a sealed, boxed version of !0.3 and a unboxed (as supplied with my G4) version 10.2. Both are full installs. Drop us a PM if you're interested in either. I can always put 'em on ebay if they're of no use to you.