First of all, no need to apologize, as you English is quite good.
You didn't mention cabinets.
I would never tell anyone with the great component collection that you have to drop them, and start over. I once had two 817A cabinets, each with two 515LF's, and a 288G/511E mounted atop of each. Not much different than what you have. All of that in a 5.5M x 4.0M room. Also, not much different. While not nearly ideal, the sound was Altec clear & very good........for me, and all my neighbors. This was, however, not in an apartment. 210, or 211 cabinets would probably not be suitable, especially with other furnishings. It can be done with the right cabinets. If your occupation causes you to move again, it may be to a larger space. Keep them, imho.