Air conditioning in new construction - What preparations?

So I just wanted to avoid having multiple outdoor units hanging on the house wall. If they could all be "staggered" behind the garage, that would be fine with me too.
As mentioned, the garage already has the connection for e-mobility 5x6 and additionally a 5x2.5. If the outdoor units go there and are supplied with power, I don't have to do anything else, right?
The cables to the indoor unit run up to the core drilling on the surface in the cable duct, right? Otherwise, you wouldn't be able to access them at all in case of emergency.

You never have to access the pipes again. As a rule, they are hidden under the plaster.

Because what is missing?

That, roughly: (this is roughly what a wall looked like in our shell construction where a split unit was installed).