Ok so I chucked in the rear springs friday night and loved the look straight away. Did the fronts yesterday, took it for a spin and the springs/shocks settled in and dropped in another 10-15mm. Looks better, feels a bit "tighter" on the road and the steering has firmed up a little(maybe placebo).
Changed center bearing on the tailshaft. Easy enough, rip out tail shaft, undo CVj oint and work downwards until you hit the bearing. Removing it is a piece of cake, I just bashed it with a chisel and hammer until it came off. Now, to reinstall was tricky. TTthe bearing is a smige under 30mm wide, which means i need a piece of tube with an ID of between 30mm and 32mm max. Hardware store had some which was 29.7-29.8mm. So I had to cut a slot down the side and then rammed a socket down to widen it enough. Worked to get the bearing on, enough for the circlip to be put back on anyway. Install was easy enough. Basically, if you have the tools to push the bearing on properly, it would be a super simple, straight-forward fast job
The one downside to lowering is my big jack(the one I used mainly for jacking the car up, etc) is too tall to fit under the k-frame, and about 10mm tall for the diff(I can just wedge my body under there and push the car up whilst pushing the jack into position, upon lowering the car the diff sits a few mm higher and the jack slides freely out.