The attached .pdf is my Katzkin installation. After about 3,500 miles on them I'm happy with them and would get them again if I had to start over. I would probably pay to have them installed instead of doing it myself. If you are trying to decide what to do, also consider Clazzio leather seat covers. I haven't seen them in person but on the PC forum, they look great, cost less and are easier to install than doing a complete upholstery change. There have been a few Clazzio threads too.
Good write up and excellent job. We've talked about Katzkin before. If you recall I was quoted $1350 for the whole thing at one point, so compared to that, you got a steal!