It's up to you, according to the developer it should go live on the Steam store in a week or so but you can already redeem the key and once it's available you can download it from your library.
Hey! Sorry for the late reply, I've taken a look at your list and I'm only interested in Wargame: European Escalation, dunno if you're willing to trade that... it might be asking too much.
As the title says.