That 'mini dstacentre' would be what, half a racks worth? Maybe a whole rack if you really wanted to push it and have lots of spares. Hardly extreme.
And you don't treat the possibility of no aircon by having no aircon; you have aircon, you have backup aircon, then you have contingency cooling. You don't just skip to the contingency straight away.
Not a big shock though, often the team budget for these things is actually derisory. And no one actually wants the jobs as the pay and conditions are rubbish as the expectation is that 'working in F1' is a reward in itself. Hint; after the first week it isn't.