This can also make it tough to both keep your grades up and to also look for research opportunities.
Neuroscience is an area where some form of graduate school is possible. We just went through the process of one daughter applying for PhD programs (not in neuroscience, but in a different biomedical field). The fact that she had found the time to do quite a bit of research while she was an undergraduate student helped a lot.
This makes sense to me. One issue is to live very, very frugally for four years of university – a lot of us do that and get through it just fine. Another issue is to need to work enough hours that it starts to take time away from school work. Doing well in university is the point, and “doing well” includes both getting the homework and studying done and also looking for other opportunities that are available.