Erin - This is a perfect kit, and the price is great. While you can certainly make your kumihimo disc for a lot less, having the booklet and the bobbins will make your learning curve a lot lower. The Hanamaka disc (which is round, instead of octogonal) costs more than than, and does not come with bobbins or English directions. I'd definitely go for it.
Lita
Please see my projects at Stoneheart Beads