Maybe I missed something, but I think you said you had a 4.0 entering junior year and might get a B or two this year in AP classes. If that’s the case, then your GPA is excellent. Carolina recalculates your GPA according to their own formula, so their determination of your GPA may well be higher than what’s on your school transcript.
My understanding is that the Honors College requires certain minimum stats (which you appear to exceed), with essays and recommendations the deciding factor. So if you are at all interested in SCHC, apply.