trying to figure out ideal numbers for T100s and T500s.
Both T1-base and T.25-base sets will work fine, although they should not serve dual-purpose usage as cash game sets, due to the potential game/bank security risk.
Typical single-table T1-base tournament set:
T1000 starting stacks (15/12/9/7), 250BB with 2/4 starting blinds
150 x T1
120 x T5
90 x T25
90 x T100 (extras used for T1 color-up and re-buys)
10 x T500 (used for T5/T25 color-ups)
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460 chips. This set breakdown minimizes change-making, with both lower denominations in the preferred 12-16 chip range.
Alternate single-table T1-base tournament set:
T1000 starting stacks (10/8/10/7), 250BB with 2/4 starting blinds
100 x T1
80 x T5
100 x T25
100 x T100
20 x T500
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400 chips, can support up to T1500 starting stacks. With only 8-10 each of the two lowest denominations, this breakdown creates a smaller, more flexible, and more aesthetically-pleasing set overall, but at the cost of barely-sufficient chips for the first 10 blind levels. That's a lot of extra change-making.
And FWIW:
Typical single-table T.25-base tournament set
T200 starting stacks (12/12/7/6), 200BB with .50/1 starting blinds
120 x T.25
120 x T1
70 x T5
80 x T25 (extras used for T.25 color-up and re-buys)
10 x T100 (used for T1/T5 color-ups)
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400 chips. One of the most efficient tournament set breakdowns possible.