The saddle is just a cheap SLR copy which need recovering, but it actually very comfy and light with Ti rails. Seated climbs are a rare thing on single speeds around here so the comfort isn't really a factor anyway. I may use it for a while.
As for some of the other bits...
The post is a road job at the maximum line and the saddle is about 30-35mm too low. A 410mm Thomson will be in place soon.
The wheels are cheap jobs and I have another lighter set to go on.
The bar is only 21" (maybe 22" max) and doesn't give enough leverage out of the saddle, so something a lot wider will be going on.
The DX pedals weigh a tonne and are badly in need of a rebuild, apart from testing builds I never use flat pedals, so a new set of SPDs will be put on.
I have some line guides to replace the cable ties for the rear brake hose so that will look better too.
I may also change the stem for a shorter one as 150mm seems a little on the long side, but more testing will be required to decide that.
Anyway, its all coming together, and should be complete in a week or two.