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AT 127Km or 76K miles US I wouldn't do anything BUT change the timing belt. The tensioner should be good until the second timing change (but you're welcome to spin it and if it wobbles or sounds/feels grainy replace it). A new one will feel very tight and smooth, almost greasy, and will be very quiet.
I'd also leave the water pump alone if it's not giving you any problem or leaking. They'll generally give you a lot of warning before failure...if you feel any sideways play in the shaft you might replace it. Change the coolant every couple of years if it's std volvo coolant or every five if it's the pink stuff (if it's DexCool monitor your chemistry and appearance carefully!).
Seals are maybe...I'd change them at 100K miles if it was a 50K TB change, but the 940's apparently have a longer belt change interval. YOu have a good chance of making it to the next TB change without changing seals...I wouldn't bother.
More important is cleaning out/checking the PCV system....if it clogs new seals won't matter...the engine will leak.
Lastly, don't forget to retension the timing belt after 500miles....simple, easy, saves pain later.
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