Pending activities can be difficult to figure out. I usually say that presentations and publications are okay to put pending, but I'm not so sure about this internship.... I mean, you'll only have a month or so under your belt before interviews. At the same time, it is an excellent experience that should be considered. It is a borderline case, but do keep this in mind--if you cut it from your CV you can try to include in your personal statement instead.
Sorry that I haven't been much help with this, I would be curious what other people would think about this.