I would push back until the roles are unambiguous. Convenience does not answer who receives your negotiating limit or whose interests guide advice on price and conditions. Ask for the proposed arrangement and all fees in writing, then independently confirm the Singapore position with the...
Keep the insurance excess in mind, but don’t merge it with the repairs pot. An inspection item you choose to fix is different from an insured event. Separate buckets make it less tempting to spend money that is meant for a genuinely unexpected problem.