hey man -
don't know why your a/c stinks-haven't heard of that one before.
lots of ppl have trouble putting their wrx in reverse the first time. usually you can press the clutch in and out twice and it'll go in. i usually just put it in first, pull up about 6 inches and put it in reverse while the car is barely rolling. once you get used to it, it shouldn't be much of a problem anymore.