Nice work. The "zen" is a very good pen.
While I think the kit could use some "refinement" I think it's a great kit. I have two that I'm using myself and I thoroughly enjoy them, the magnet is great.
Lots of folks don't like the kit b/c of the way the writing tip looks, it looks uncomfortable, but in reality you can't grip that part to write with anyhow, you grip the wood/pr part just above the tip and it feels good in the hand, about the thickness of a sharpie but with a good pen weight.