Thank you for comment Gerry.
Did you mean that A400's should be placed as far apart in the room as possible whereas T1030 can be placed closer when you mentioned the boundaries?
Also, should both pairs be toed in or just place front facing?
The A400 isn't meant to be be "pulled away" from the wall behind it. Doing so will weaken the bass considerably. Nor was it designed to be "toed in" (which pulls the speaker slightly away from the wall behind it. The T1030 can be used near or close to walls, but also several feet away to minimize wall reflections which can slightly "blur" the stereo image. You can also toe theT1030's in..also to minimize blurring the "first arrival" stereo image.
I personally believe that speaker spacing is best between 6' to10' apart depending on size of the room (for either system) and how far you can sit behind the speakers and still have good imaging AND good, smooth bass at the listening location. There is no hard/fast rules to exact distance..depends on the room and aesthetics.