Sorry Im writing in english as my swedish is not the best.

So Im thinking of going to Berlin from Stockholm around 17th of august. stay there 4 nights and then go to Paris (probably with a train).

Im hesitating whether to take the plane from Stockholm to the night train. I found a Eurowings flight at 6am which means I would have to be in the airport super early. Otherwise, I found a night train at 4pm (16h ride) but the sleeping seats are taken so it is only normal seats available. The plane with the cost for my extra luggage is the same cost as the train so price isn't the issue. The luggage I have with me is a big suitcase, a backpack and a longboard maybe.

Which option would you guys suggest?

Check trains routes, f. x. Snälltåget.

If you don't wanna be at the airport super early, take the train.
If you don't wanna sit 16hs on a train, take the plane.
Which one is more or less convenient only you can decide..

A third option is to catch the Norwegian flight the same day at 13:40, about the same price as the Eurowing