The DID rims are standard. Yours will either have corroded to nothing or will still be like new. I investigated this issue with several London wheel-builders (notably Hagon) and they said the consistency of DID products around this time was terrible. They were developing the alloy they would use or something, which means that some products (the good ones) will last forever and some are like putty in a few winters.
Can't be as much help of the clutch, but I have been told you can lie the bike down to do it. You lose a bit of oil but you should top it up afterwards. And while you're doing the plates you may as well check / replace the springs and file down the basket so that the notches are removed. A dealer would charge around 60-70GBP for this, inc. labour and parts. I decided that, unless it was an emergency I will pay someone else!
Lots of people use the EBC pads with no problem. They do a "normal" and a heavy duty Kevlar (although I believe heavier springs are recommended for the latter). Touratech do extremely fancy ceramic clutch kits for BMWs, so if you fancy something that will last *forever* you could give a UK distributor (Bracken Motorcycles?) a call, but be prepared for an expensive shock!
My opinion
