You are right that there is a lot of small fiddly soldering to do. However, this is my first attempt at this sort of soldering, and so far, it's not going too badly. One piece defeated me totally and so I resorted to superglue, and was able to back it up (unseen I hope) with a piece of glass fibre scrim for strength! I won't say which bit, but will wait and see if anyone can spot it later!
So it's not impossible, you end up with a new skill and the result is really satisfying. I've learnt to not get de-moralised looking at the small parts, think it through first, clean everything twice and then just set-to. Philsrcmodels website has some good tips on holding the bits together while you solder, and his ideas helped me a lot; thank you Phil.