If you are in doubt then you need to do some sort of itemisation and estimation of the value of your contents. Don't forget that some stuff that you might think of as part of the house may, in fact, be contents. The "usual stuff" is meaningless since different people have such diffent and wide ranging budgets, tastes etc.
c. €316K for the buildings sounds potentially high. Are you sure that you're insuring for the rebuilding costs and not the market value? See the many existing home insurance threads and this SCS guide for more on this:
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