I spent a similar amount on a Mk4 Mondeo 2.0 TDCi last year, and it's going to clock 130K any day now. It's been faultless and I wouldn't hesitate to buy another at that mileage - especially as the DMF has been done on 'yours'.

I know the_frozen_one prefers the 1.8, but have a look on Talkford.com and see the number of problems with the 1.8, over the 2.0. There are a lot more troublesome 1.8s out there, and a lot more 2.0s in existence, so I'd personally recommend the larger engine.

Bear in mind that time kills car as much as mileage - and as it's still relatively new, bushes and perishable parts will still be fine.
Mine did need new rear arm bushes (big bastards) but it's a known weakness on Mondeos, and especially estates.