I like the colour-matching with the denominations. Still not a fan of how similar the edge spots are on the $1 and $5 though - I'd really consider changing up one of those chips. Even if it's just one of the colours if you're intent on keeping white in both.
One additional thought re: the $20. For me, the edge spots from the $20 through to the $500 are all pretty similar - what about trying something like a 414418 edge spot pattern for the $20 - I feel that would help achieve a smoother transition from the $5 to the $100.
Something like this perhaps?
View attachment 574594
Personally, I'd take the time to really nail your lineup down and not let myself be pressured by what in reality is a fairly fluid deadline in terms of CPCs production schedule. A
CPC set is a lot of money, and if it takes 2, 4, or 20 more mock-ups to get it to where you look at it and go, "perfect!" then that's what I would do. For my recent set I mocked up no less than 40 different versions of the chips and a few dozen variations on the inlay before landing on my final design.