Numbers
I used Blackjack Risk Manager 2002 to derive the following information. You can find out more about this software at the link below.
You didn't mention what counting system you use, so I assumed Hi-Lo. The closest game I could get was 3 of 4 (75%), H17, DOA, DAS, LS. With the following betting scheme your win/100 is $38.73 and ROR is 17.71%:
TC <= 0: $15
TC == 1: $30
TC == 2: $75
TC == 3: $120
TC >= 4: $150
If you play like this you are seriously flirting with disaster. The following betting scheme has a win/100 of $29.40 and a ROR of 4.89%:
TC <=-3: $0 (wong out)
TC <= 0: $10
TC == 1: $25
TC == 2: $50
TC == 3: $75
TC >= 4: $100
Good luck.