Not a big job.
You should ideally get hold of some timing pins.
Like these http://www.paddockspares.com/timing-pins-land-rover-td5.html
Cam cover will need removing.
You should also remove the fan, makes it easier to turn the engine with a socket on the crankshaft pulley bolt.
Refer to the manual for the pin locations and proceedure, its been a while since I had to do mine after a head replacement so I dont want to go into too much detail!
Shouldn't take more than 1 hour including fiddling time!
Mark
No just the cam cover to lock the camshaft.
The flywheel locks with a pin through a threaded hole. Have a look under the car you should find it quite easily.