There's a $100 rebuy around here (I haven't played it) and I hear the struture is something like this:
10k chips
Blinds start at 100-200
Can rebuy any time you are under the 10k chip mark
Levels are 30 minutes for the rebuy period and twenty minutes after that
Add-on at the end is like 12k chips
Blind structure is something like
100-200
200-400
300-600
400-800
500-1k
500-1k 100 ante
600-1200 200
800-1600 400
1k-2k 500
2k-4k 500
4k-8k 1k
5k-10k 2k
and it caps at 10k-20k 2k
There might be an extra level in there somewhere, not sure.
Seems decent for a 3-4 table MTT, but would be kinda meh for a 100+ person tourney as by the time yu get down to 3 tables it's a shove contest.
If he wants to keep using the 150 chips and start at 1-2 then just make it like...
Half hour blinds during the rebuy, 20 minutes after.
1-2
2-4
3-6
4-8
5-10 1 ante
8-16 2
10-20 4
20-40 5
30-60 10
40- 80 10
50-100 20
100-200 40
200 400 50
By this time the tourney is probably almost over so it doesn't really matter. Also tell him to not cap rebuys and addons... it's just bad business.