7.1 Atmos downgrade

Hi, I have to move to a new flat and will have to downgrade my atmos setup. Right now I am using the Teufel Ultima 20 5.1 + Teufel Reflekt atmos Speaker, receiver is a Marantz NR1711. I am not sure what the new flat will be but pretty sure there won’t be enough space for the two rear speakers and maybe also not the Center speaker.

Do you think I can use two front speakers and the two atmos speaker as rear channels to have a 4.1 system? And what are your thoughts about ditching the Center speaker?