I used to think U-brakes were the height of coolness as they were on every highend bike I saw in the mid to late 80's and when I got my Holdsworth I was chuffed I had joined the elite group.
That is one lairy paint job, not shy or retiring at all.
If it was me I would be going for a full DeoreII set up to give the flavour of the original but the benefits of Hyperglide, 21 speed and 2 finger levers.
Carl.