No need to worry with a TD5, I've seen some in the UK with excess of 230,000 miles on the orgional (Yes they judder and make noise) But no signs of letting go. We had one go at 250,000 miles,There was heaps of meat on the driven plate it was the rivets that broke first!!!
Td5 Clutch's are the biggest clutch land rover fitted to a vehicle Its alot larger in surface area to a Tdi or Puma with DMF and good all round you won't have any problems with it.
If you are going to replace it. I always fit genuine Valeo (Green Boxed) with a new Genuine LR Dual Mass Flywheel (It's worth it) As the effort required to pull it out again it's not worth it. Also fit brand new Genuine Slave Cyl and Genuine Push road (Series 3 idea) Much better system then the Tdi idea. Also arguably better then the Ford Fester idea they use on the Puma.
If you do all this you will have another 200,000+ km out of it.
I would not expect you to need a clutch in that 125,000 km vehicle for a long long time unless it's had a very bad driver.....

