Nice build love to see a light bike approach and love the old kona frames hope you'll keep it !
You can still loose a bit of weight on that seatpost with an easton carbon for exemple and maybe going with oldschool sram xo carbon mech/shifters, why not some crossmax SL, you're not interested going full disc brakes with a welded mount on the rear ?
Interested by your feedback on the toseek I would like to order one to replace a broken fatty on an old cannondale volvo frame, also it was just one for 27£ or there is multiples of them ?
Paul I liked your post but never replied! I'm almost built up so will see what weight I can get the FM down too. Imagine I'll start buying bits that I can transfer into the frame I've acquired later down the line.
I'm still looking at 24-26 but realistically, if I'm spending, I want to be down around 20-22!