Rebuilds have to be done at around 60k, but some go as early as 40k, others as late as 80k. Best bet is to get one with a recent rebuld, but I rebuilt mine myself, and I have never done a rebuild before. I found it dead easy to be honest. There are a hell of a lot less moving parts than a boinger.
As for the way it drives, I pretty much said it all on the first page. I'm 5' 11" and I only just fit with the seat right back, so you probably would find it cramped. The seats go further back on the official UK cars though, and it's dead easy to mod the Jap seat rails so they can go back further.