GL with this. just a tip for the BS issue, because of Marrowrend and Heart strike both consume runes.
the two will compete with each other, so you will find as you test this, that you may fix the Bone shield issue, but may have a DPS drop due to a reduction in the use of heart strike and vice versa.
Its a puzzle I have been trying to find the perfect solution to myself without having to manually apply one or the other to compensate at times. I didnt count the other abilities like dnd that also used runes as they are often on a CD and their overall impact in rune consumption is minimal