Pretty easy with the locking bar and a torque wrench. The INA kit should be £250-300, and I always change the thermostat (£30 ish) as a matter of course. I tend to do the water pump on mileage as that is just a bearing and seal so doesn't age like the belt does. 70K km I wouldn't bother, if it was replaced last time.
Its worth considering doing all the aux belt rollers and fan pulley bearing at the same time as they can cause a lot of noise from the front of the engine and you'll be in there anyway, although the fan pulley does need a press. I can send you an assembled bearing in return for yours when you're done though. The two trickiest jobs are getting the viscous fan loose, and getting the crank locking pin in and out.
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