That curve looks very reasonable, I am ok with it and I think AB de Royse777 agrees, too.
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Here is a blind structure that I'd suggest.
The idea is that you can experiment on your own simply by inputting numbers into the boxes, and the curve and prize table will update live each time.
https://docspace-u9csub.onlyoffice.com/s/fgFVXK4P_WCdwsxOnce we choose a structure we like, we'll need to manually round the amounts (to the nearest $10, for example). Also, the lower payouts can be the same size.
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As for the ante, it's almost ideal. Just one small note. I’d keep the ante fixed at 1/10 of the SB until short-handed play begins, meaning all the way up to the final two tables.
Anyway, let's first check the expected field size.