Tomek -
MMG's will work fine in your room, and quite likely better than box speakers would because they won't put as much energy into the room's bass resonant modes.
If by chance you have the freedom to do so, you might try positioning your set-up diagonally in the room, with the listening position in or close to a corner.
As long as you can locate the listening position near room boundaries, such as up against the "rear" wall or near a corner, you may find that a sub isn't necessary to give satisfying bass. And in an apartment setting, a subwoofer can really annoy the neighbors, whereas dipole bass is much more neighbor-friendly.
Best of luck to you!
Duke