I am purchasing the 5DM3 and have been doing my own due diligence and now that I have my list I want to post it here for other thoughts.
I shoot landscape, wildlife and macro in Colorado and surrounding areas.
Tokina 17-35 f/4.0 AT-X Pro FX
Sigma 105mm F2.8 EX DG OS HSM
Canon EF 100-400mm f4.5-5.6L IS USM
Sigma EM-140 DG Macro Flash
Canon GPS Receiver GP-E2
Hahnel Giga T Pro 300' Wireless Shutter Release Timer Remote
Canon BG-E11 Battery Grip for EOS 5D Mark III Digital Camera (is there a cheaper one?)
Manfrotto Midi Ball Head 498 with RC2 Rapid Connect Plate
Manfrotto 334B Automatic Monopod
(I already have a Manfrotto 732CY M-Y Carbon Tripod)
SanDisk 64GB Ultra SDHC UHS-I Memory Card, 30 MB/s Read Speed
Lexar 32GB Professional 400x CompactFlash Card
Any and all advice would be extremely helpful and greatly appreciated!