Oops... stumbled across this one a bit late, but, looks like you made the right descision. I can't see your pics as i'm at work ,but, having had by D3 for 7 months and 23 days now (fyi, never buy a car on the 31st of a month, it screws you over on tax) I can honestly say they are great vehicles.
Yes, they have some issues, but, find me a Land Rover which doesn't - or - any other modern jap crap which you can work on and do everything a Land Rover will do...
Yes, it is more complex, but, all cars are getting more complex, it just means the home mechanic needs to step up a gear to do things on it. I was chatting to someone (think it might have been someone from here) who was saying things like body off (well up) is really not that big a job, people just get scared because it sounds complex. When I had my cambelts done the mechanics did it with body on, it was tight and they swore a lot, but, it didn't need the body off like LR state.
Parts are not badly priced, the 4x4 parts dealers are starting to get more and more D3 and D4 parts in now, as more people do stuff themselves. Get yourself on Disco3.co.uk - they have a huge wealth of knowledge on there and there seems to be someone who has tackled every job you could think of.
I'm about to do all the Discs, pads and wheel bearings in prep. for Morocco - front bearings are same as D2 - change the whole hub, rear it's a press job.