[Chiproll]

400-500 chip sets cant afford to give out 40ish starting stacks to players and expect to have chips colored up. I think the WSOP breakdown this year was the most efficient chip breakdown one could come up with for T10k:

8 x 25 (96 total)
8 x 100 (96 total)
8 x 500 (96 total)
5 x 1000 (60 total)

You could take out the 1000's for a T5k which would reduce your total chips needed. For color ups I would suggest 37 more T100 and 39 more T500's. I wouldn't worry about coloring up the T500's.

100 x 25
150 x 100
150 x 500 (400 chips, T5000)
100 x 1000 (500 chips, T10000)