George, I've been dipping in and out of this thread so sorry if this has been addressed already, but I would be seriously alarmed if you were planning to shoot 4,000 images. Over an 8 hour day that is 500 per hour, or about 8 per minute, or about one every 7 seconds non stop.
When I shot my first wedding I captured 672 images over a day lasting from 07:00 to 21:00. That's 14 hours, which makes my shooting rate close to one per minute. Now I was only a guest, and an amateur (still am) but there was no pro hired for the event so I stepped in to do the best I could.
It took me a bloomin' age to go through them, weeding out the duffers and duplicates and trying to cut them down to about 100 and I ended up with a bit over 200 keepers in the end. The keepers then needed fine tuning for WB and exposure, plus any other minor tweaks - I keep my photos natural, not gimmicky. If I was a Yervant I would have been kept busy on PP for several days.
Anyway, the point of this rambling tale is that I wish I had paid far more attention to my histogram and shutter speeds, and capuring perfect moments, rather than firing away a bit too freely. This would have reduced the volume of dodgy photos to plough through. Quality, not quantity, or "Less is more"!
Anyway, I wish you the best of luck. I hope you pull it off. Keep things simple and I'm sure you will