I have decided to build an all electrical panel. The current plan is for a single PC680 battery, and dual alternator system like AeroElectric Bob's, Z-13 schematic. Key backup devices will be on a secondary endurance bus, which can be powered off the primary bus or through a switch direct to the battery. This system will result in greater reliability and overall it will most likely weigh less than a traditional system that includes a vacuum pump and associated gyros. Here are a couple of different panels, what it looks like when I am finished is anyone's guess:

The Dynon EFIS-D10A or D100 will replace the traditional vacuum gyro instruments, clock and g-meter. The vacuum pump will be replaced with a secondary backup 8 amp alternator from B&C. 

Another advantage to the all electric panel is avoiding damage to the gyro instruments during aerobatic flight. This won't be a problem with the all electric panel as the one and only mechanical gyro, the turn coordinator (if I go that way), could be shut off for aerobatic flight.