hmm, yes, 66 seems like a strong candidate, especially as i know i have that ratio in the shed.
spinning through the countryside and freewheeling down the slopes sounds like a good way to spend a week in the saddle. cheers all.
quite light - 22l of stuff max, plus a couple of 750 bottles
i do think the majority of the uphill will be relatively shallow gradient, but there are a couple of more challenging bits that have me a bit concerned.
riding my bike, riding my luck