Nice build man! I have the same
It's also very nice with a bracelet! much better than I expected.
The problem with lowering the movement is the cap between the tachy and the crystal. The biggest issue is that the crystal is pressed inn, from from the inside of the bezel instead of from the outside.
So normaly the crystal is hold in place by the tachyring.
In this case (with the cap), the crystal is only hold by a very very thin edge of the bezel (this edge is like 0,5mm). if you push the crystal with your thumps, you can probably push it in.
So for water resistance it's not the best construction.
I have solved this by lowering the movement not as far as yours. Also I have shaved the gasket between the bezel and case a little. You will not see this but it's enough to keep the crystal in place.
I would do one other mod if I were you http://www.rwg.cc/topic/137108-how-to-mod-your-ap-pusher/page__hl__%2Bpusher+%2Bsander
Ciao,
Sander