Brave venture, but the way I am thinking, if those custodians are totally clueless (fiat normies) when it comes to Bitcoin, never handled their own sats or not much clue about what exactly those keys represent, is it a smart choice to trust them with the key management?

M of N custody setup is great, but should not you choose those N based on their trustworthiness and also whether they are already managing their own sats (in some capacity)?