Beats me, I don't work in those fields. You have a product/service you're trying to find customers for (marketing) and get them to buy it from you (sales).
There's one historical movie scene that comes to mind for me when I think about Sid Meier's Civilization 7, and it's not a flashy arena fight in Gladiator or mission control cheering as we safely bring Apollo 13 back home. It's Leo DiCaprio as Howard Hughes in The Aviator, running his hand along an airplane fuselage and insisting that he doesn't want to see any rivets.
You just described a load balancer. The router doesn't know about DNS but clients using your service use DNS. You can do some simple load balancing behind DNS. If you want to do it by IP address you want a load balancer though.
If overcomplicating things is a concern for you, then just use let's encrypt. Running your own ca is a pain in the ass and probably decreases security for most people due to the difficulty of doing it correctly.
I enjoyed this one a lot when it came out. The levels can be kind of repetitive and the game is on the shorter side but the story is good and it's nice to hear the original actors.
The lounge is trash content anyways.