Awesome, will definitely be submitting an order for one of each (White, Black, WYSE, Dolch), and I'll probably get some extras too to help fill out numbers. I don't actually have a Dolch set yet, but hope to somewhere in the future...
Personally I don't agree with having more than one spacebar in the pack, as it would be unnecessary for most people.
Also, not sure if people would be interested, but what about including both a full touch and stepped centre-stemmed caps lock? I don't think an off-centre stemmed caps lock is really required.