early morning idling problems and AC..

hi everyone, hope you can help me. i have a V6 96 accord with 125k on it and auto transmission. lately when i start it in the early morning it will occasionally idle REALLY rough, until it warms up. doesnt do it all the time just maybe every other time or so. i had a basic tune up done and fuel filter change not too long ago so i dont know what could be causing this.

also, we recently had the AC charged and most of the time it works fine, but every now and then it suddenly starts to warm up - sort of in and out. it's not the compressor going on and off either, just the air seems to fluctuate from cold to warm.

any suggestions? thanks in advance.