Jobs Help!

So I decided I need a new source of income. I am currently working part time at a party store 20 hours a week. I love the environment, my coworkers, my managers, etc.. they only thing I’m bothered with is the hours. There’s no way to get more hours in this place, 4 hours a day is my schedule for every week. I’m currently stuck in a situation, I don’t if I should quit my current job to get a new job that will give me more hours. My other option is to stay with my current job and do closing shifts there and also get a second job to work at in the mornings? I don’t know what to do and I’m stuck between these 2 options.