Ten players using starting stacks of 20/20/9/1 for 100 in chips or 20/20/9/5 for 200 (deeper stack) in chips, T25s and T100s for rebuys and add ons.
Color up T.50 chips with T5 chips
Color up T1 chips with T25 chips
As a rule of thumb, your tournament will end when there are 20 big blinds in play. 10 players x 200 = 2000, so the game will end when the blinds are at 50/100. Work backwards to make sure blind increases are smooth (avoid 2x jumps), and adjust level length appropriately. Remember to figure in for breaks.
I usually end rebuys at the first break, but definitely before a starting stack will be 40BB or less, as this leaves very little playability, and quickly becomes a shove fest. I will usually offer a half stack add-on for half the buy-in.