If this were me in this situation:
I would prolly take a little stint in jail IF:
i didnt have a family
Wouldnt loose my job
was sure enuff in my fighting skills to defend myself if the time arose

I would do probation IF"
the opposite of #1 above
The opposite of #2 above
Didnt feel like fighting anyway...

Now this is if the 180day sentence was implied.. if its just a few days..10-15, maybe 30 then id do the jail time, have it over and done with, and could still smoke after the fact cuzz i wouldnt have to drop piss for probation...