I wonder if it would be possible to reverse the confirmed and unconfirmed?  I know that the current looks much nicer but it can give an incorrect view of when a payment could be possible - stacking the confirmed on top of the unconfirmed hides the point at which you actually cross the payment threshold.  If the stack was the other way around the lower line (confirmed) would cross the threshold line when you could actually be paid.  This would still show the "total" but might not be as pretty.

Great job by the way

Miles