I would definately not take the summer job. Stay in your safe secure job. Sure flying may be your vocation but what really matters is money coming in, bills being paid and food on the table.
The emotional stress on you and your family if you couldn't find work at the end of the summer would be very harsh. I personally (and it is just my view) is that there will not be major recruitment this year in most airlines. To take the risk of going back to flying would be foolish and risky for your family.
Things will pick up again and your currency (or lack of) will not be a problem and you will be flying again. At the end of the day you are employed right now so keep smiling.