I have RAAL's in my small theater room, and they fill the room with plenty of SPL no problem, they sound great! I have tried my buddies Fusion-12's and in my small room, I much preferred the RAAL's.
The RAAL 70-20Xr can actually be crossed quite low, especially for a ribbon. I believe that mine are crossed at 1,200hz. If it were me, I would go with the RAAL, Neo-8, and a high quality woofer such as the TD12 or possibly even something from the likes of ScanSpeak or Seas.
Keep us posted!