Thats a nice yellow.
Couple questions I would like to ask;
1) The legends, they will be noticeably larger than whats on the mockup as you mentioned
2) Are the location of the legends representative of the product? top left corner for both alphas and modifiers?
3) Meaning that we are not going for large centred text as in the original type writer that this is inspired by?
4) what sort of MOQs can we reasonably target? obviously larger MOQs mean lower starting prices, but larger MOQs increase risk of failure. Seems that GBs right now are very tricky to realise, and even a poll indicating commitment does not convert into real purchases. I know this is not something that is as simple as simply throwing out a number. Hindsight helps..
And finally, I do agree on holding back on the GBs for a little while, the over saturation of failing GBs is not a good case for bringing your one up right now. As much as I would like to have a set right away.