I took almost exactly the same kit on our Rhine River cruise in July. I took:
Canon 5D2, 17-40 f4, 24-70 f4 IS, 70-200 f2.8 (non IS). I estimate my lens usage as 50% 24-70, 30% 70-200 and 20% 17-40. I actually rented the 24-70 since the only thing I had to fill the gap from 40mm to 70mm was a Nifty Fifty. I debated between renting the f 2.8 and the f4.0 IS, deciding on the IS because of weight and rental expense. I liked it so much that I bought the rental copy instead of returning it.
I also took a GorillaPod SLR tripod, but rarely used it. It just takes too long to fiddle with and since it is a table top height tripod, I found few places I could use it. I took a WeyeFeye transmitter and an iPad Mini to do remote shooting (with the GorillaPod), but rarely used it as well. I was thinking I'd use it for multiple exposures for HDR, but ending up hand holding my HDR exposures. I framed loose, shot fast and my HDR software had no problems aligning the images.
One of the best pieces of kit I took was the Lowepro ProTactic SH 200 AW camera bag. This bag holds everything listed above as well as a lens shade for the 17-40, batteries, CF cards, a polarizing filter, lens brush and other accessories. I love this bag because it has a zippered opening in the top. You can store your camera in the bag and pull it out when needed without having to open up the bag. It works better than a sling bag and much better than a backpack that you have to take off to do lens changes. I rest my arm on the bag when I carry it and lightly grasp the shoulder strap when in crowds. I don't use camera straps (I think you run the risk of them catching on something and pulling the camera out of your hands). Instead I use a stout wrist strap. No one can grab my camera without getting me as part of the bargain!
While the 5D will fit in the bag with a battery grip, it's a tight fit. I took off the grip and left it at home. I took 6 batteries and rarely had to change out during the day even though I normally shot over 300 frames a day.
We went to Italy in December and I took the 17-40, 50 1.8, 85 1.8 and 135 f2.0. I left the 70-200 at home. I also took a Panasonic Lumix LX7, which I used in big cities. I left the primes at home in July and didn't really miss them, although the 135 is a magic lens. I also left the Lumix at home, since I never felt unsafe when in Tuscany. The Lumix did a great job, but is noisier and can't shoot above ISO 400 without the images falling apart.
I hope you have a great trip! Take the kit you listed. Look hard at the LowePro bag, which is the best travel bag I've owned in 50 years!