There is one more thing to consider.
On site sales have higher margin but you have to have someone who is there to serve it.
Consider non traditional / returnable packaging.
Take deposit for your packaging.
Consider that you will spend fair amount of time distributing.
This goes nicely to brand building.
You are in charge and control your growth.
Bottled beer has higher margin then draught beer (at least for me).
Draught market is tough.
I would like the option to be able to self distribute but having a distributor is well worth it. We are able to have our beer from Huntsville to Auburn and soon even further. I could never do this myself or pay someone.
As far as bottles, the profit margin is higher but so is the amount of labor.
Not disagreeing with my fellow cohort, just adding some side points.