You can easily modify the default hotkeys in Typing Assistant:
Set the Hotkey for word AutoComplete.
Select and Complete by Index HotKeys:
Select and Complete word by Main Digits(1-0) or function keys F1-F10.
Show Special Suggestion Window HotKeys:
Show suggestion window of Auto-Expand, Auto-Clipboard and Auto-Launch. You can even set a hotkey to alternate show them.
Enable/Disable Typing Assistant HotKeys:
Set the HotKeys to Enable or Disable Typing Assistant.
Show Custom Settings HotKeys:
Open Typing Assistant custom settings by hotkey.