I might be willing to help out. It would be a good opportunity to meet people from the forum!
Had the full exhaust system off mine on Thursday (Pre-cat Removal) and back on with no leaks. I'll admit that I was planning to fit a Milltek Cat-back. The issue I had was brand new silencer and used back-box (had been clamped so wouldn't fit together). I bought an exhaust expander and now the two fit together fine.
They WILL be on the car Monday!
So a little experience.
The only thing I will say is; can you get it off the ground? I used a 4-poster lift at work, which made the job tolerable. It might be tricky on axle stands! Although I did re-join the center sections of a MK3 this way when I pulled it off on a high speed-bump.
Good luck
Edit: Oh yeah, I'm in Rednal.