Sunken Floor Joist at Foundation

[jtcapa]

I'd like to see a vid on how to do a raised stem wall with a sunken floor.
All my contractors weighed in, and the "architect" detail I posted is just that. An Architectural fantasy. Not very smart, or buildable.
The metal flashing system is substandard, as it will eventually rust out. In the NW we like to do it cheaply by simple using a PT rim joists and Neverstral flashing, but again not the best.
The most common way contractors will build it is simply sinking the floor and raising the stemwall. Use a wider than normal sill plate and hang the joists off the sill. Most builders will even use a 7 1/4" pt sill set flush to the inside, wrap neverstal flashing over the rim and behind the hangers, allowing contact with the concrete.

So how easy is it to do a Chief Sunken floor? Can we do it automatically with settings or do I have to drag up all the stem walls?