All but freshness feedback affect forecasts (taper adjustment only for events). More documentation and help is forthcoming.
I wouldn’t set polarization to 90/10 since that will make your high intensity workouts the most challenging. 80/20 still will give you very hard high intensity workouts (some can be done while still yellow status if that’s what works best for your schedule).
Periodization only takes effect for target dates more than 120 days away. Lower it if you want more training all the way through.
Leave taper where is it for now. More info on it coming…
You can experiment with these by changing them and running the set up guide. Just don’t save the forecast and return them to their defaults.