I would caution that starting any business takes up a lot more time (and money) than you'll anticipate. After a full day at your regular job, will you be motivated to give the nano all the attention it needs? One way to find out is to get a side job to both learn the business and gauge your actual level of commitment vs your everyday obligations.
On a more practical level, look into the logistics of sales and supplies. When and how will your beer get delivered and how will you get supplies if you have a day job?
Not the most inspiring of questions, I know. But, every cool idea eventually turns into hard work and compromise.