Air Sealed Plywood to Window Rough Opening – GreenBuildingAdvisor

So I thought I had a plan but now I’m questioning myself a little on order of operations and the amount of tape.  We are building double stud walls, euro flange-less windows, and taping the CDX with zip for the air barrier.  WRB is Mento 3000.  Target is for Passive House air tightness (because at this point I’m emotionally attached to that target).  

So I’m looking for the best order of operations to water and air tight the opening.  My thinking is:

1) Tack bevel cedar siding in place to create sloped sill.  

2) zip tape entire RO with zip stretch in the corners and a wide 6 or 12″ tape to cover the whole cedar shim

3) Cover wall with Mento 3000 and cut for the window 

4) Install window (setting it back from the plywood face by 2″)

5) Tape Mento to window exterior with Pro Clima tape

6) Foam and tape around window from the inside to create the air seal to the plywood buck 

Anything you’d change the order on?  Most of my favorite YouTubers are using zip, so the order of operations is slightly more straightforward.  475’s example uses Adhero so they are sealed to the plywood and the WRB all in one step.