The design of the speakers can make a big difference. Sealed vs rear ported vs front ported. Some will tolerate being closer to room boundaries than others. Different speakers need varying amount of space to work. Good luck and have fun.
Speakers "Too Big" for room
I have an office with KEF LS50 speakers. I’m gonna try to move in some large Infinity full-range speakers. Typically, conventional wisdom would say that these speakers are too big for the room. I’ll know for sure how they will sound but, why would anyone say that. Why can’t you put large speakers in a small room???