Regarding chip breakdowns, we play .25/.50, capped BI at $100 which most do at least for initial BI. Chip breakdowns:
12 x .25=$3
12x 1=$12
7x$5=$35
5x$10=$50
FWIW we use tourney chips (meaning 25=$0.25 in cash, 100=$1.00, etc), and even we donks don't have a problem with it. We have a couple dudes who always announce "Raise 500" when they mean $5, but heck, who's going to argue with a guy like that in the game?
Rebuys are almost always in $10 chips. With 8 players there are plenty of quarters for blinds on the table. Yes, we make change from time to time, but if you give out more 25's and 100's than the initial BI, you will have a crowded table very fast.