What a great project - I have (I think) the exact same frame which is pencilled in for a similar restoration. It's my town bike at the moment so gets no off-road usage, the components are just the spare ones I happen to have lying around and the paint is just a deliberately unappealing rattle can job.
At some point I hope to get another scrappy town bike to replace it and start a similar project using as much UK componentry as possible and your build is really setting the standard! Lots of Pace, Hope, Middleburn - also hope to get some USE bits on there too - more difficult to source mechs, rims, tyres etc from UK manufacturers of course...
Anyway, what a great project so far - really looking forward to the end result!