Archaeon is in finecast these days, so it shouldnt be too difficult to remove bits... removing the head however will not be a simple slash of the hobby knife, it appears to be joined to a far amount of the shoulders/cape/etc.
I would personally just use the plastic blood dragon, and then have him switch between sitting on the zombie dragon, and on a blood knight horse (or even on the old red duke models horse, which is actually available seperate in the VC bits section)
I would personally just use the plastic blood dragon, and then have him switch between sitting on the zombie dragon, and on a blood knight horse (or even on the old red duke models horse, which is actually available seperate in the VC bits section)