The job is OK to do on your own, get the car up on axle stands front and rear to give your self some extra room.
Split the transfer box off first then take the gearbox out.
Before starting get some long studs to fit in the gearbox to help align the transfer box when putting it back, there is a mention of the right size on the forum so do a search, life is so much easier and there is less chance of damaging the oil seals.
And as mentioned replace ALL three clutch parts and get a reinforced clutch fork.
Incidently, I replace my clutch because it slipped on the odd occasion when it got hot. Upon inspection there was very little wear on the disc, the quality when measured up against the replacement though was quite unbelievable!
The driven plate linings on the new clutch were held with TWO lines of rivets and the old one only one row and the pressure plate diaphram 'fingers' were made of a really thin metal as oppossed to the thicker ones on the new pressure plate.
The thinner fingers were probably the cause of the clutch slipping.
Get a decent clutch!!
If you have any oil leaks this is also a good time to sort them!
regards
Dave