So the rain let up and got mine done. Like Dan, my copper freon line was already insulated (mostly). I added a little extra to fill in the gaps.
Here you can see both ends of the insulated line are exposed.
Here it is with reflectix and some extra pipe insulation.
First test this weekend in Junction, TX. Highs will be near 100. I'll report my findings as to any performance increase.
BTW, if you do not have a 3 blade fan, you need to swap your fan with the 3 blade one. The earlier fans had problems breaking. The 3 blade fan is also quieter.