Break it into three sets of 420 chips. Each set supports up to a 10-player T8000 tournament (or smaller starting stacks with re-buys). Sets can be combined to support two tables (2 sets, 840 chips) or three tables (3 sets, 1260 chips), based on buyer's preferences.
100 x T5
100 x T25
75 x T100 (includes 10x for T5 color-up)
145 x T500 (includes 10x for T25 color-up)
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420 chips = 10 x T8000 starting stacks (10/10/7/14) or up to T7000 stacks with re-buys
Pulling out those three sets leaves a balance of 306 chips:
134 x T5
43 x T25
69 x T100
58 x T500
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306 chips
Due to the shortage of T25 chips, there isn't much that can be done with the leftovers. You could pull out a 100-chip heads-up set:
40 x T5
40 x T25
20 x T100
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100 chips = T1500 starting stacks (20/20/9 with 2x T100 for T5 color-up)
which would leave these extras:
94 x T5
3 x T25
49 x T100
58 x T500
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206 chips
Fewer T5s or T500s wouldn't be such a problem, but no T25s pretty much kills the entire 206 chip lot. And adding the extras to the other sets adds absolutely no value - it just creates extra cost for the buyer for extra chips he can't use.
Best bet is to sell the extras to others who need to fill out their sets.