Worth a job longer hours but not much more pay?

I have never had a “real” job. I’ve always worked at my parents store st the asian grocery. It has its perks like flexibility, it can be laid back at times, and I make $300/wk working 32 hours. I have considered taking over when they retire but I have been here my whole life I just want to experience something new. I’ve graduated college I’m business two months ago. Not sure what I really wanna do with my life yet at 24. Take over store or get a “real” job and try to climb the ladder

I have a pnc bank job I am sure I’ll get because my sister is high up there and pulled strings. I found out it doesn’t pay much at all and only requires a high school degree. Only $50 more… I’ll work longer hours and not make much more than what I do now and I’m very unmotivated by that. =/ but everyone says to give it a chance and you have to start lower for real experience if I wanna move up…