My biggest pre-trip dilemma

The age old question. Well not quite: probably a small fraction of people have been asking themselves this for a small part of human history but nevertheless the question is there...

Which cameras to take?

Next month we are travelling to Spain for a three week holiday that includes two five-day bike rides, with a few days either side in Valencia, Girona and Barcelona. I'll want to capture a record of the bicycle riding including my friends and the scenery we pass through. This will include both stills and video. It might be raining and cycling in the rain requires REALLY waterproof cameras. Other cycling characteristics require reasonable shock resistance. I'll want to take photos at the football (going to see FCB vs Granada), which may be a night game. I want street photography in the cities. I want food photography. I want everything but I can't afford the weight or space for a complete library of cameras.

At least one camera must be suitable for the cycling segments of the trip, but it is possible in addition to also have one that is only available in Valencia, Girona and Barcelona which are non-cycling times.

Here are the choices:

1. A Canon 5D MkIII with a fairly comprehensive library of lenses, strobes etc. to choose from:
• Disadvantages: Heavy and bulky. Probably not suitable for on-bike use. Expensive so a little bit of anxiety.
• Advantages: The best images. No question. Probably the only camera that can take meaningful images at the football.
2. A Canon G12:
• Disadvantages: Not weatherproof. Low light performance not fabulous.
• Advantages: Compact. Versatile.
3. An Olympus TG-1:
• Disadvantages: Image quality compared to the above. Maybe not much worse than the G12.
• Advantages: Weatherproof. GPS. f/2.0
4. Contour GPS:
• Disadvantages: Still images are not usable. No zoom. No viewfinder.
• Advantages: Durable. Handlebar and helmet mount. Sports video OK. GPS. This one is almost certain to go.

Actually there are more choices but that will do :-)

So what to take? I'll take more than one camera and probably less than four. Opinions welcome! If you suggest the 7D, what lenses (I have several primes and zooms from 10mm to 400mm, mostly L quality)?