Both are fine. Do you have the capital to open a shop? Being your own boss is definitely busy, but it is worthwhile to make money for yourself. Part-time job is to make money for the boss. It depends mainly on your own ideas. You must have a lot to worry about when you open your own shop. It was not easy at first. When you are on the right track, you can relax. Make your own decisions about your own affairs. Good luck.