You can use any quality worker, it won't affect the quality result of the item that you're trying to craft. Worker quality only affects crafting duration. You can try investing on green/blue tool assets; raise the % of yielding highest tier of the item you intend to craft that way. I think with 2 blue + 3 green you can hit…
Spent about 3hrs farming purses and made 1mil RAD not to mention the other stuff. It's gonna' take a while to refine just the ones we will make on this event <.<