My wife's friend is getting married on a budget and I've been volunteered to do the photography. I have done some engagement pictures and things of that nature, but mostly outdoors using available light. The wedding pictures will be in a church (not sure on the amount of available light). I do have a 580EX II though I would likely need to pick up a PocketWizard to deal with low light conditions.
Outside of that, I have 5 years' experience with my 7D and I have a 35mm f/1.4L that I've used somewhat exclusively for a couple years. A colleague of mine is letting me borrow his 6D and I'm planning to rent a 70-200mm f/2.8 L II. This should allow the flexibility I'll likely need without being a zoom mounted to a crop sensor.
My primary questions at this point:
What am I forgetting as far as gear? I don't mind picking up another flash but I rarely use flash (granted, maybe I'll use it more with the PocketWizards and what not). I am debating picking up random senior pictures so this gear won't necessarily go to waste.
What are the likely challenges I'll see that I may not expect from the gear I intend to use? I'm hopeful I have enough coverage on the wide side with the 35mm (and 1.4 is pretty good low light capable, with the noise reduction of the 6D especially) and enough with the 70-200 to get nice tight framing.
Is there something else that would be recommended other than the PocketWizard? I am looking at picking up a full frame camera at *insert undisclosed date here*. I just don't know that I have enough justification for it at this point and the 7D does a really nice job most of the time. I also have a G7xII I purchased for a Disney trip so my wife may not be terribly pleased with another camera when I haven't used the 7D as often as I probably should. Thanks for the assistance.