Maybe its just me, but if I were spending a pile of cash on a trigger it would be a complete drop in, not upgrading the mickey mouse factory setup
Giessele's triggers work, not just "nice". It works because it works for a long time and doesn't go off when dropped. That is why the US federal government of many branches keep sending them money. None of the triggers designed for combat arms use drop in boxes, as another poster mentioned earlier for good reasons.
I ran the same super dynamics-E the OP wants to install which I got from Armseast Easter sale - 0.16 split consistently. The only thing I am not happy about the trigger is that I should have bought it 2 years ago.