If you think you can handle take pop up on the deal but understand there will be LOTS of pressure to succeed and any large margin of catastrophic failure/misconduct will have major repurcussions on the company and its morale (like getting caught sleeping with subordinates, etc)

On the up side of the family business, if you can get it going faster, harder and make it grow, you can eventually excuse yourself from the in-store aspect and maintain an indirect supervisory role, which gives you more free time to do other things, like make more money or chase skirts.