I only had 16 total hours actually in a pharmacy and I got in everywhere I applied. Granted the rest of my stats were pretty good. Most of my interviewers brought up my experiences in pharmacy and were more worried that I had a variety of experiences than the number of hours I had done. This variety showed that I had experienced the different areas of pharmacy (those 16 hours were split between three different types of pharmacies).
So my advice would be to get a good amount of hours with this opportunity without getting overwhelmed. Along with that though try to find some other shadowing experiences in other areas of pharmacy to show that you understand the field you are getting into.
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