This goal of the project has been completed...
Window installed and tar paper put up just like roofing shingles to keep the weather off the OSB. Eventually, I'll get around to removing all the stucco and replacing with concrete fiber clapboards. So, for all intents and purposes, the structural work is complete.
The white squares are sections of Vinyl flashing used with stapes like button nails.
The edge seams of the stucco/tar paper are covered with concrete fiber board sections. Concrete fiber board is also used near the ground to keep mud and silt from splashing up on the tar paper preventing premature wear.
Now, to move inside and reconstitute the impacted interior...