I also have a small space. I use small, stand mount 2-ways 6" midbass and ribbon tweeter, and selectively use a pair of sealed 12" servo subs. I drive the 2-ways with a pair of M700. I don’t have the real estate for BHK amps, but I did make room for the BHK preamp!
I also find room treatments along with convolution my favorite weapons to bring out the most of my speakers and amps.