Side job is good as long as you have still time to do your responsibilities and other things.
It is a side job and you are in charge so you will definitely be able to create the time for other engagements unlike working under someone who dictates your time. I will choose multiple side jobs over working a job or business provided the side job is profitable. I will even agree to have a reduction in pay if I already work a job so that I could have time to run my business or do my side Hustle. For future sake, I think the side hustle or business you do for yourself is more important than the Job you are working for someone else.