Cat - Wow thats a lot of carbs, just looking at the Hi5 website and they same 750-1000mls an hour or drop that down and add gels.
Barlos - Shame about the pasty, not sure it the first thing i'd want to eat after a 2.4mile swim in the irish sea.
Sound like its all about personal preference and finding out what works, I have a feeling I'm going to have a few uncomfortable long bikes finding out what doesn't work for me.
As part of my recovery week I cut my swim today down to 35mins and did my first gym session in months, I may be a little sore in the morning. 35min Z2 turbo this afternoon felt strangely tough this afternoon.