If you assume the policy will pay and it does not, the €66,240 risk remains with the owners. Insurance normally responds to specified events, while ageing materials and deferred upkeep may fall outside that protection, so ask what exact cause and damage the policy covers.
Next establish why the...
Your point about assigning each next step is probably the most transferable one. A simple written list of the outstanding item, responsible person, and target date could prevent the final week becoming a chain of assumptions.
I’d also separate the remaining cash into moving costs, known work...