is there a way to default a calendar to week view and certain start and end hours ?

Ken. Thanks for asking questions I can answer!

1. Default View: In the Calendar Properties there is a Preferences tab.

If “Remember user’s last View” is selected then what you saw last will show up first.

If it is not selected, the first view you have defined in the builder will show. You can go to the XML to reorder the views. (Feature enhancement opportunity noted…).

2. Default Hours: In the Week View Properties, there is an Advanced tab where Default Start and End hours can be set.
   

There you go…