Moggs,
I always tell folks not to post more than they will be happy to part with. After the first 3-4 days most people have attempted to snag their top wishes. There are still great seeds available then, but as the swap nears the end people (also guilty here) sometimes add seeds they would not ordinarily use, just because they are available and no one else seems interested.
If you want to reduce the number of packs to reserve some for your group, I would.
But, that's just me.