I'm getting smarter!
I can get the WindowTitle by setting the RadRibbonView.Title NOT the RadRibbonWindow.Title (found in the How To section).
The Default Icon (set in the Project Properties) does not show automatically; however I can show it by explicitly setting RadRibbonWindow.Icon property. The problem is that it covers the beginning of the QAT. To fix that I just set the Left Margin on the QAT to move it over. Now all I have to do is make the Margin dependent on the value of the RadRibbonBar.QuickAccessToolBarPosition (either 16 for above, or 0 for below)! This I did by handling the RadRibbonView.ToolBarPositionChanged event in the code-behind...
sender, Telerik.Windows.RadRoutedEventArgs e)
.Ribbon.QuickAccessToolBarPosition == QuickAccessToolBarPosition.AboveRibbon)