You got there in the end though M8.
Yes use both, or disable the WD back up routine or set it to only back up the non system (C:) drive.
Let Ghost take care of the system drive only (it will by default try to do all drives ) as this is your belt and braces 'bare metal recovery' solution.
Set Ghost schedule, once a day is more than enough, but I would leave off the option to create a recovery point after installs etc, as this will slow the install down...
If you wish I can see what documentation there is for your WD drive and give you better pointers.