We should go for both job and bitcoin. A stable job is a full requirement in life while BTC just to make sure it adds up something on your life, something to spice up your life. BTC because a great knowledge in the advance digital money could be an advatage for future transaction.
Well it really depends if you still need Bitcoin as a way for extra earnings, because if you are earning thousands of dollars per month than doing Bitcoin as a side job is not efficient not unless your trading capital is big. If you have a big role in a company then you might want to focus on that instead. I as student can both balance study and earning Bitcoin as I still have a lot of free time compared to other people.