Great advice in these posts! If that engine is in good working order then that's a steal in my opinion.
Also it shouldn't be too hard to source that rear seat row you wanted, so that you can get the full seating capacity you wanted. The used parts market is pretty healthy with as many of the Disco 2's that are off the road thanks to the engine gremlins. In my experience the different trim levels are easy to mismatch parts between, even more when you start considering the other models of Land Rovers. In my area there are always a few in the pull-a-part yards, which makes for mega cheap part resource!
In my opinion they are quite simple to work on, much like wrenching on any american made pickup truck. Although I've heard on occasion that repair work, in labor at least, can fetch a premium just due to the shop seeing the badge on the grill. The basic wear parts are cheap & easily sourced locally, but when you get into less commonly replaced parts it can be a decent wait on parts. Could save you loads of $ if you're handy with a wrench & are savvy hunting down parts online.