Some good points made by all, so thanks.
The 64 degree wedge option seems to be have been debated against - which is fair enough. Unless your Phil Mickelson, a 60 degree wedge is enough around the greens. Also I wouldn't be needing it for a full shot, you would just hit another wedge, softer.
The 3Hy would fill in the gap nicely; particularly in the winter time, with the ball flying shorter and there being less roll - it would become more important.