Over the past two months I've swapped out all my camera bodies and lenses and have ended up with the kit I've been describing. The bag of choice for this gear is the Think Tank Photo Streetwalker.
I can attach the camera with lens to the shoulder straps which balances out the load. I carried everything on the hike yesterday and it's comfortable and it isn't a problem. Of course, the whole kit weighs less than the weight I've lost over the last six months.
Rather than order identifying end caps or stickers, I simply used a silver Sharpie to help identify the lenses, two of which are very close in dimensions.
The pouch on the left contains three 72mm filters which fit the 35mm and 50mm lenses. The 24mm lens has 77mm filter threads.
And here are the three lenses with, and without, hoods.