Good point. What post do you plan to run? I am using my Thomson Elite Setback for cross. It is relatively heavy but I am far from smooth and weigh 80kg on a good day. It is nice to know that your post will still be okay when you slip on the mount and slam your junk into your saddle. I think if you are smooth and weigh under 85kg, you can get away with a carbon post.

I wish you good luck on your build. I have a felt F25 frame from 2005 in the same liquid orange color that I plan to build into my road single speed before the summer. I'd love to see some pics of how everything turns out for you.

This looks good so far. Do you have any ideas for what wheels you will use? Your decision there will determine whether you make your 7400g goal. If you cut enough weight from those you can negate the addition of tape, cables, a rear derailleur, and a chain.