Looks like Gefen just expanded their fiber optic line of cables (all fiber optic components are built right into the cable) to also include HDMI cabling (they had them for DVI before), which means I don’t need the external HDMI extender units (7 of them from this post).

http://www.gefen.com/kvm/cables/fiberextreme.jsp#hdmiextreme

Now if they would just come out with a similar solution for dual link DVI, we would be all set… :)