Great. I am looking forward to see your shots. I understand your excitement.

I even know this situation. As we changed "Dexon Knight" to A7 we also had better rendering speed. This is because of the ABT and because we have small outdoor levels.

But I also know an indoor project that became awful slow after converting to A7. This is because of the lack of BSP and no other indoor scene-management option like zones, portals or similar.

So this means: A7 up to com edition is only suited for small games and outdoor projects (like you can see in the last official demos as well).
For indoor you need the pro and I know not a single demo that can proof if the new A7 bsp really works (especially in combination with shaders on level geometry).
So it is hard to upgrade to A7 except you do small outdoor levels or puzzle games.

In your case (and in Dexsoft's case) everything was fine. And I am happy for us, really