After all of that lot above, perhaps you'd like a serious answer?
Sentencing guidelines for ABH are on page 17 of this document:
http://www.sentencing...person_accessible.pdf
The sentences quoted there are for first-time offenders, who are convicted after a trial. Previous convictions can push sentencing higher. An early guilty plea can see a reduction in the sentence. (In the case of a custodial sentence that's normally by one third).
As you'll see from that table, your sentence would depend upon whether the court regarded your action as 'pre-meditated'. You should also note that 'operating as part of a gang' can be seen as an aggravating factor, pushing sentencing higher.
Chris