These are very good questions to start with. In addition, Make sure you cover the following bases: 1. Security - viruses are just one thing, ask them about pen testing done, system stability, fallback options, rollback plans for deployments/changes, make them reassure you that they are rock sol...
This is very vague, how you spread any knowledge is largely dependent on the type of information you want to put out. I'm open to share some useful tips, especially related to Project Managent, open for a call.