How many credits with research?

<p>Hey everyone, I was wondering how many credits you thought would be appropriate to take in A+S while working in a lab for credit. I would be putting in around 10 hours a week in the lab for 3 credits, but I’ve already pre-enrolled in 18 credits of classes and am not sure if that’d be too much. Does anyone have a feel for what would be realistic?.. i.e. would it be smarter to drop an unneeded class, or would 21 credits be doable?</p>