Looking at buying a 90

Well time has come to make the decision to sell my day to day car and get a Defender 90, now i only have about 5000 to spend and what I wanted was some advice what to look out for on the 90s 200 and 300tdis

now i now rust on the bulkhead and rear cross member is an issue, but what else should I be looking at!!

Cheers

snow