As the topic states, I have finalized the loading order of the main managers in VisualOgreCore:
mDockingManager
mPropertyManager
mEditorManager
mOutputManager
Panes.OgrePane(this);
mProjectManager
mFileManager
mMenuManager
mPluginManager
Basically, this last change placed OgrePane before the plugin loading, so you could tie in early to events. Now, by the time a plugin is loaded, everything but the docking configuration restoration is done (because, you set the initial location), and then by loading the restore, it will restore any saved info.