Let’s encrypt on ipless dag no load distribution

Im wonderingnhow this will work as its done randomly by dns, we have 4 exchange servers and you get assigned one by random chance dns. Not my idea but that’s how it was and that’s how it Hass to stay as no money has been allocated towards a load balancer has anyone ever done this? I’m thinking if I put the renewal script on each of them one of them will have the DNS Record of a given time, and then it will sync up through the Dag.