You could break each of the repeating options into its own mapped key.
I mention this in my guide, one of the first examples.

You basically copy the mapped key, so there are two of them.
Rename one as Keyboard Repeater and the other as Mouse Repeater.
Then go through the two mapped keys, and remove the Keyboard + Mouse from each.
So one is entirely keyboard and the other entirely mouse.

There is a walk through of this, as an early example in my guide.