At that time of the day the last thing you want to be doing is get into traffic and use a taxi as Swedes are terrible at building and planning infrastructure so it will e congestion hell. It would be fine if the AE was more reliable than it has been lately, while accidents are very rare the issue is that it runs on a shared track and its becoming more and more common that its delayed in transit because of other trains. My intended 18 min trip on Saturday ended up taking 47 minutes because of a broken train in front the AE causing it to drive at < 40 KM/H. I'd leave earlier to ensure a timely arrival.