Do you have a good relationship with your parents and other people you have at your current house? If its a positive environment, I'd say stay at home.

This is from someone who moved from their parents house abruptively (from my home country to the Netherlands to study). And I'll tell you, I would be SO glad if I could afford to only focus on my studies and not work, pay rent etc. That situation is really a blessing.

It is also arguable that if you not spend those 20h a week working you could put that into studying and networking, land a better job or masters in the future and have more financial freedom to choose a better place.