should i drop a class?

Does it look bad to take 3 classes? I took 2 classes for grade and 1 class (independent study class) for p/np last quarter and I'm planning to do this again this quarter. Right now I am doing 2 researches and its taking about 20+ hrs a week so its difficult for me to take 3 classes for grade, 1 class for p/np and manage to get A's in those 3 classes. I'm concerned that if I drop one of the classes and when I apply next year, admissions ppl might think I slacked off or something. Would it be better to take 2 classes for grade and 1 for p/np and get A's or take the risk of getting a B and take 3 classes for grade and 1 for p/np?

 

Was that question too specific or something? ..