First off... stop panicking, your in soil and problems happen slow and are fixed slow. It looks like your getting on the closer side of a harvest so no need to stress. You can use straight up water from this point out and still end up with some good smoke (strain depending). CFL's are not going to produce the most dense bud anyway, so no need to push it on the flowering ferts. From your pictures it looks to me like the nitrogen that was in your starting soil started to deplete (yellowing on the bottom leaves), and you hit it a bit much on the chemical fertilizer. Not a big deal though, they are far enough along and are definitely healthy enough to produce fine buds till finish. If you want to keep a fertilizing program going, flush like all the other guys said and hit them with a well rounded fert (I would go with a 10-10-10, or something organic), at half strength (closer to full if your going organic) next watering. As far as your too much light question goes, no, you are not using too much light. Keep CFL's (especially lower wattage, like 26w) a few inches off the buds. For me, four inches is ideal for that wattage. CFL's produce far less heat than their big bros HID's, but heat can still be a problem. 85 degrees is not ideal for flowering. Low to mid 70's would be perfect but not necessary. I would not run constantly over 85 though, it will definitely effect the plants health and their yields.
I know there are a lot of different opinions on this site, take them all with a grain of salt, including mine. Learning first hand, from your own trial and error, is by far the easiest way to learn what works for you.
A couple beers and a bowl and I'm rambling on like chick! Sorry for the long post, hope some of this helps. - Bilbo