I own the Joseph RM22si sig, which is pretty much a 7si sig as a floorstander. I bought the 22's after overhearing the 7si's at a local dealer. My room is also very similar to yours dimension wise, I am using a McIntosh amp (the old MC2105), and like Peteinvicta1 I have my speakers on the long wall (I got lucky in that they sort of had to go there). I think you have the right idea getting minimonitors for your space. My 22's are floorstanding, but still imploy the small, 2 way design of the 7's, and it works very well having smaller speakers for a smaller room (especially when placing them on the long wall).
I can tell you the Joseph's are very nice speakers and that they image well and are not too picky as far as placement compared to other speakers. Some of this opinion comes from what I have read; what I can hear is limited as I am a new audiophile. I have also read that the 7si mk2 is a very significant improvement over the original. I can only imagine how good it sounds. I would definitely recommend going with the Josephs (hearing with your ears first would be ideal).
I can tell you the Joseph's are very nice speakers and that they image well and are not too picky as far as placement compared to other speakers. Some of this opinion comes from what I have read; what I can hear is limited as I am a new audiophile. I have also read that the 7si mk2 is a very significant improvement over the original. I can only imagine how good it sounds. I would definitely recommend going with the Josephs (hearing with your ears first would be ideal).