well done !
iris boxes are great for keeping screws in as you never lose the lid :-)

What they mainly illustrate is that you have your retractions nailed !
which is about 80% of doing intricate or multiple part prints :-)

Now it's all about ramping the speed up :-)

I think I print the boxes at about 80% size, just for speed as much as anything else.
a 4 hour print - is a long one for me :-)