Again? dude youre set. if anything get a 24/28-70 which will be the bulk of your work. I work with a belt on me. 2 pouches. in your setup, I would have the 16-35 on one camera and either the 50 or 85 on the other and switch between them as you need to. if youre right there in the middle, you dont need a 70-200 80-400. if you have room to move around and work then why not use the sharpest lenses? just use the 50 and 85 and walk as you need to compose. dancing, use the 16-35. if people want a portrait with a friend, grab the 50/85 off your other shoulder. what are you going to do with the 70-200 in that situation? youll have to step back at least 6' from them! with the 50/85 only 3 feet and you can shoot at 85 and get an aesthetically pleasing shot compared to the zoom at only 70. plus the VF is sharper and will help you in low light. dude dont think for a second any 70-200 can do a better portrait than an 85mm prime. no way in hell. the bokeh and creaminess is unparallelled! you will only stress yourself with the 70-200 because you will have no place to move at times. the 50 and 85 are light and easy to switch between on the fly. besides the ceremony where I need convenience and flexibility I must use my 70-200 (80-400 would be just fine) but other than that it sits in the bag and prefer IQ over convenience. I purposely use primes for the amazing images it renders compared to any zoom.maybe the 14-24
if I could shoot the whole wedding and had enough space to shoot. Id use 4 lenses. itd be a 24, 50, 85, 105. thats it! oh and a fisheye for unique pictures. primes just give a different level of quality and feel to the pics. its like no zoom. 50 for 2-5 people half bodies. and 85 and 105 for sniping and couple shots. dude the 80-400 is fine. bump up the iso if you need to and get a mid range zoom. you have the WA and the long tele. but no midrange. and since you arent so experienced in weddings and need as less stress as possible a midrange will help with that. most times youre not so far from people that you need a 70-200. heard some fantastic stuff about the tamron. I started with the sigma 70-200 HSM APO ist gen then jumped to the 80-200 AFS man what a lens! im not connecting with my 70-200VR1 like I did with my 80-200AFS
but I said my piece. what rote you choose is your business. may the force be with you.
crap! indoor reception? wow that sucks. I though it would be outdoors on the beach. you could have done some kick ass stuff. sunsets with silhouettes. wow. my mind is racing full throttle fantasizing what I would do.