question from one who was accepted--and congrats to all to were!

anyway, i'm slightly concerned about my first semester grades. i've been hearing differing opinions on what UNC considers when they review year-end transcripts, and because i got a C+ in my government honors class i'm a little worried that that could be something counted against me later on. i would bring up the C+, but government honors is only a semester and i'm in econ honors now.
so the main question is: will a drop in grades (from a B+ to a C+) make UNC change their minds? or is it truly something more drastic, like dropping an AP class?