12 km easy. PRIORITY session. Test first gel at km 8.
Best window
Good window: now. Why: there is no strong usable later weather edge left today, so the priority is easy completion.
Execution
Start easier than feels necessary. Keep the whole run conversational, and take the gel at km 8.
Avoid
Do not turn the middle of this into a moderate effort day just because the legs feel decent.
Success today
Success today is 12 km done easy, foot quiet, gel tested, and no late-run grind.
Priority
Main work is largely accounted for.