RAC for Europe? Pah need a mortgage for that. I'd get ADAC memebership, around £70 for the year, including UK cover. Last time I asked AA/RAC for 2 weeks cover, they wanted about £150 just for those two weeks

Considering the distance you are going James, sounds a good list to me. As you never know what may fail, I did about 3k in 2 weeks going down to Austria in the 2.2.
Only issues I had was some idiot did not put strong enough screenwash mix for the -20 driving conditions

You mention ramps, what about a jack? I took a little one just in case. As the emergency scissor one is rubbish.
Because DTi's are very good at destroying their crank pulley when you least expect it and Omega's HBV's are the epitome of reliability!
I wouldn't drive anywhere in a 54 degree V6 vehicle without a crank sensor in the boot either!
Doesn't matter if your 5 miles or 500 miles from home, either of the last two can be fixed quite quickly at the point they fail if you have the parts and you can be on your way. 
All the more reason to change them before you leave, and not have to worry about them. When a new HBV is £20, it could be considered a cam belt service consumable.
As for carrying a crank sensor, if they were that bad I'd be scrapping the heap of junk and going back to a mk2 Granada.
There's a pretty broad line between being prepared, and being utterly paranoid about breaking down. No offense James, but I think you're well on the way to a free jacket that fastens at the back if you're actually going to take all that stuff on holiday.
Crank sensors can fail without warning, changing for a new one does not mean it will last. They take up very little space and it's a 5 minute job to replace, so be very foolish not to carry one in a trip to Euroland
