I would say take what you can get while your home. Lifting some weight is better than just taking a month of from lifting. Hey maybe the change up will even help you out when you get back to school and get to hit the bigger weights again. I assume that you are saying that you dont have enough weight at home to do what you were doing at school or something, yes no? I hear that high impact cardio is what is bad for the muscles, well the kind of muscle I presume you are trying to gain. I read on this forum that good cardio for weight lifters is speed 3.0-3.5 incline 15 on a treadmill. Brisk pace, sweat that fat right off yo fat ass.