Not a bad sign at all, it actually shows that you're being realistic about your particular situation. At first though, I would recommend that you plan on triying to attend as much as possible initially, then decide what your learning style dicates as the semester moves on. The only times you'll be there late is on your dissection days. The labs go until 5 or 6 (I can't remember which, and most groups are done earlier, except on particularly difficult labs, in which case you might be there right up until, or even a bit after. But if you have an outside obligation, such as picking up your kiddo, I don't think your lab group is going to mind if you leave a bit early on those rare days.
Most people that ended up being homeschoolers such as myself started doing so starting the second semester of MS1 simply due to anatomy lab, anatomy lectures w/ bonus points, etc. After that, you're pretty much only actually required to be at the lecture hall maybe an average of a few hours a week.
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