Got your e-mail. Yes my 156 is about similar age and mileage. The big MUST is to check the oil regularly (every 500 miles at least)mine seems to use no oil for a thousand miles and then all of a sudden it needs 2 pints! also on selespeeds keep an eye on the gearbox oil. You should know immediaately if the gearbox is playing up coz it will jump out of gear, find odd neutrals, and lag between gear changes. beware of any clonks between changes as well. At 60k you are heading towards an expensive service (about £400) but the biggie comes the one after next when (depending on who you believe) the cam belt needs changing. Look to have about £600 saved up!!
Accept that the build quality is abysmal, don't get upset when bits drop off and flake off and just remember that the smile it put on your face the first time you found a decent, empty country road, will last as long as the car!