cool, good luck, I'm toying with exactly the same idea but if fixed I may b&b / hostel it to keep weight to a minimum. I think the SW will be the worst due it's relentless up down up down no flat anywhere!
i know, have been talking to a mate of mine who did it on a £50 mountain bike on a whim last year, says the hills down there are saping but said the highlands represent much more gradual climbs. Im thinking of taking a smaller front ring to swap for these sections as i reckoned the weight/tools needed to change would be far lighter than the chain whip/lockring tool to put a bigger cog on!
i know, have been talking to a mate of mine who did it on a £50 mountain bike on a whim last year, says the hills down there are saping but said the highlands represent much more gradual climbs. Im thinking of taking a smaller front ring to swap for these sections as i reckoned the weight/tools needed to change would be far lighter than the chain whip/lockring tool to put a bigger cog on!