Hey Ringmir,
I guess I have a few worries and should probably be more explicit about them:

1. The placement of the speakers behind the door and the fear that I might slam it into the front of the speakers!

2. The effect that having a build-in wardrobe or shelving along the wall behind it

3. The possibility of the speakers being in a more equalateral triangle insteal of an elongated one because that would move it out of the door and wardrobe way...

Yup it would be a more permanent setup as opposed to my changing apartments every 6 months right now. As far as I can see it, where I proposed to put the speakers seem to be the only possible setup and I'm wondering maybe a fresh eye can see another solution without worrying about doors and possible closet space?