I am both up for this and in the UK (I gathered from your spelling of 'arse' in the first post you might be over this way, and the £s confirm it), if that makes shipping of boards easier? I have a dead SE board that has suffered a mild battery explosion and I think all the chips ought to be salvageable.
Well, most passives are about £30 roughly guesstimating - refer to post 1 to see what you should salvage or have to buy new. You can get 338-6523's (they're just Rockwell branded MOS/CSG 6523 TPI's) for about £5 each, the 26LS chips are £2, the other logic is anywhere from £1.20 to £3 depending on vendor. SIMM sockets can be salvaged, but i recommend buying new from the link i posted on page 2.
Your documentation is coming together very nicely! I look forward to being able to read it all when you finish. I have only ever had limited success understanding whatever it is google translate generates, so this will be a great alternative!
I have enough spare board/parts to probably put together a working one of these. We would have to build a parts list for all those odds and ends that we don't really know what the heck are (or, in my case, have no training to know what they are).
Have you nailed down how much one would cost?