Your XATA plan sounds reasonable.
You can play with XFAI forecasts and move back to Continuous at any time.
I learned many things about Xert by experimenting, switching back and forth, playing with the sliders, etc.
Once you settle on a program the daily routine is: 1) Select a workout from recommended list (if auto-schedule isn’t enabled), 2) Run EBC on your phone to select that workout, and 3) Start the workout.
You don’t need anything else but you can optionally watch the workout on a laptop or tablet by opening the Remote Player (traditional blue block chart) or Session Player (enhanced chart and gauge plus viewing options under Settings icon in upper right).
Here’s a link to my fitness test post that explains why you may want to choose one on occasion as your HIT workout –
From old trainer to smart trainer. Set FTP - Training - Xert Community Forum
As you’ll see the short one is nothing like a RAMP or 20-minute test. At the most you’re putting in 10 minutes of effort spaced apart.