Hi, looking really good. I'm also a first time grower growing outdoors in scandinavia (close to Göteborg), however my strain of choice is the auto ak47 by norden seeds. I planted mine on the spot some days after you, and therefore they grew a bit slow in the beginning. Now they are quite big and nice though. It would be nice to compare the harvest once they're done as well, do you plan on weighing them and posting results?
If I were you, I wouldn't set a hard date for harvest, better to take it as it comes and harvest them when they are ready. It's always sad to see someone harvest prematurely...
Some pics of my 3 plants, taken today:
http://imgur.com/a/Cvt1f#0
And I wish you the best of luck with your growing, I'm sure you will get great results!