If you think it's worth the money, then go for it.
What MY is it?, mine is a 2009 on a 58 plate, but not all 58 plates will be, some will be 2008 MY, which have some differences like the Haldex is different.
The TD4 engine is generally good for over 300k with timely oil changes. However they do start to sound clattery after 200k as the valve train suffers from wear, but it's pretty easy fixed if it's an issue.
Make sure the gearbox and the rest of the driveline is working correctly and quietly. Also make sure there's little corrosion underneath, as salt in winter does cause rot.
Also check for soft or leaking shocks, worn bushes etc. Look at previous MOTs for clues as to the quality of the maintenance.
Rear wiper is common and cheap to fix.
Actually most things are pretty easy to sort, although rear diffs, PTUs and gearboxes get pricey.