That's such a coincidence I ordered during the promo too and was going to pick up World of Seeds NLxBB but went with Northern Lights #9 from Sagarmatha instead. Still might pick it up with my next order though. Like someone else mentioned, all those strains are probably pretty good outdoors, but depending where you are you need to worry about finishing time. Where I live, I'm good temp wise til at least late Oct, but we tend to have wet fall weather and I had some issues with mold last season, so that's something to think about too.
Out of the freebies, I think I might try Mekong High and Kannabia Special. They gave me Kannabia Big Band instead of Ultra Skunk though. I'd like to try the White Widow too but I don't think it will finish in time for me. If it were me, I'd definitely grow out as many of those Serious Seeds AK47 I had and that NLxBB as well. Especially the AK47 I hear it does really well outdoors. When growing outdoors in places like the NE, upper Midwest, Canada, etc, genetics are very important. I don't want to put all my eggs in one basket. I took some gambles on genetics this past season and it hurt me in the end. I have a ton of freebies from several purchases over the past year, so I want to give some a try, but on the other hand, I don't want my season to depend on what the Attitude decided to give away that month. I would order beans specifically for outdoors if you are in a climate where finishing times are important. Other than finding a good patch (if growing guerilla style), I genetics is the most important controllable variable.
Check out
Seed Finder. That's usually where I start when researching strains. From what I gather, a lot of these Dutch Passion fem strains have a tendency to hermie and aren't exactly for beginners. There are a few other strains from Dutch Passion I would have rather had tried besides the ones they gave away. I was about to order beans anyway so I figured might as well wait a week and get the extra freebies.