Are the consoles/printers going in the man cave? Or are some remaining in the house?
Building a garden games room is the absolute dream! Having a dedicated, detached space for gaming and hanging out is so much better than trying to squeeze it into a spare bedroom. Planning the layout and making sure the foundation is solid is half the fun. It really reminds me of starting a fresh build in a sandbox game, where laying out the perfect base is everything. I always use
https://topminecraftworldseeds.com/ to find the best landscapes before starting. Can't wait to see how your build turns out!