It's a great write up and I have a question which I think others can answer.
How many of you carry a spare tyre in case of something like a split tyre?
What's your contingency plan if something like that happens?
On a 200 I'm pretty minimalist with two tubes, tyre levers, puncture repair kit, spare link, cable ties, multi tool and credit card. With the feeling that it's only a 200 and if I have a major mechanical and DNF it's probably better than carting around a massive toolbox/spares just in case.
Now as 400s are rarer I'm thinking I need to carry a bit more but don't really want to take the kitchen sink with me. Any suggestions/advice?