Realistically 2 pounds per week is healthy. 2.5 pounds per week is borderline healthy. I would not recommend doing any more than that. Since you were talking about classes, you seem to be young. Your weight/height does not make you obese so if you go any more than that you might see a loss of muscle (which you don't want) and/or a decrease in energy level.
2 months --> 8 weeks --> 16 pounds
So yes, your goal does seem achievable!!!