I'm not a lawyer, and I don't know much about Swedish law, but based on Finnish law (which tends to be very similar to Swedish), the maximum combined sentence for all the charges would have been 7 years in prison.

The combined sentence is capped to the maximum for the most severe charge plus 3 years (when the most severe max is at least 4 years). In this case the most severe one is "lesser degree rape", for which the max is 4 years (that is still open).

Based on what I've read about the case, I would have been very surprised if the actual sentence was anywhere near the maximum. Probably more like a year for the rape and another for the other three charges, if they even hold up in court.