That, my friend, is a ton of gear. As I said, the bodies act as teleconverters to cover focal ranges. The 7D is a 1.6 and the 1D4 is a 1.3. If you think of it that way, there's a lot of overlap everwhere.
• The 17-40/4 + 70-200/2.8 with the various bodies makes the 24-105 irrelevant.
• The 70-200/2.8 + 500/4 with various bodies completely overlaps the 300/2.8 (but the 300 is sweet).
• The 8-15/4 with various bodies completely overlaps the bulky 14/2.8 (though not the same kind of lens)
Three lenses, two teleconverters, about 15 pounds, your back and sherpa saved with no loss in focal length coverage. Keep the long mainly on the 7D, the medium mainly on the 1D4 and the short mainly on the 5D2. Play to their strengths but swap out when needed.