SWB Pajero info

Hi all, I have been using this website to gather some info about which 4wd to buy. My wife and I had intended to go for a small 2nd suzuki sierra. However, on the weekend we went out camping with 2 friends in a 94 4runner and realised that even though there are only just the 2 of us, a sierra would be too small. We saw an 84 swb Pajero for sale, went to have a look at it today with our mate who knows a few things about 4wds, and had a small test drive (though only on normal road, no 4wd terrain in the eastern suburbs!). Everything seems fine, it has almost no rust, from the receipts it seems the owner (who had it since 95) has looked after it well. No info about the first owner. It drove fine, we drove it for a short way in both 4wd modes. It has a few extras as well, power steering and a cd player. The only thing is the kms, it has done 230,000kms. The owner has the receipts to show that a new motor was put it after 200,000kms (in 2000). He spent $2500 at that point, $2100 on the motor and the rest on bits and pieces. So it has only done 30000kms with the new motor. We are having our mechanic check the vehicle out tomorrow, but wanted to get some other informed opinions about if it sounds good. He is asking for $4000, maybe we could negotiate it down a bit, i am not sure yet. Anyway I would love to get some of your opinions about whether it sounds good ASAP. Our budget was about $5000-6000, so if the mechanic says that it is a good vehicle with a few little problems, I don;t mind putting in $1000 to make it all spic and span. We don't want do do any crazy extreme 4wding, just some dirt roads, maybe a beach or 2. Anyway, what do you think?