Planning electrical systems to be future-proof

And you really don't want to use normal RJ45 connectors, especially in connection with POE, right?

Why not? What are "abnormal" connectors? With a reasonably flexible cable, there is plenty of space on the back of the Nano.

So as long as the shell construction is still ongoing, I would try to have a box installed by core drilling. The installation cables are quite rigid and would have to be cut extremely short before mounting the keystone. Even then, it will still be a fiddly job to get everything into the gap near the Nano. It also becomes problematic if the access point needs to be replaced in 5-10 years. Who guarantees you will get such a recess again?

Why not? What are "abnormal" plugs? With a somewhat flexible cable, there is plenty of space on the back of the Nano.

I was a bit imprecise. By "normal RJ45 plugs" I did not mean those already on patch cables (with molded strain relief) but the "cheap RJ45 crimp plugs" (and I consider those not "acceptable"). Otherwise, as already stated, all! in-field mounting plugs for installation cables are too big and rigid to be fitted into the Unify APs. I have the HD flex, Pro, UAP-AC-M-Pro etc. myself here and at home. It simply doesn't fit.

Thank you. In response to my question about whether we can still sample UP boxes for the next filigree ceilings, our construction manager replied: "The ceilings are already ordered, but there is a solution for everything." :)

And you don’t really want to use normal RJ45 connectors especially in connection with POE, do you?

I was a bit imprecise. By "normal RJ45 connectors" I didn’t mean the ones already on patch cables (with overmolded boots) but the "cheap RJ45 crimp connectors" (and I consider those not "acceptable").

What is the problem with a cheap RJ45 crimp connector?? I have been using it with PoE like that.

It’s getting more concrete with us. At the beginning of the week, we have a shell construction inspection with our electrician. I’m happy to give you feedback when a layperson works with the electrician of the general contractor.
As a first step, I have selected the following components (tips from threads, YouTube, or shops) and ask the electrician to install these as preparation for my further work:

1. Network cabinet:
Either the HMF 65709 (unassembled) with 51 x 40 x 45cm with 9 U for 70 euros or the Digitus network cabinet "Dynamic Basic" with 45 x 60 x 50.5 cm with 9 U for 100 euros

2. Patch panel for keystone modules:
HB-Digital 24-port shielded patch panel for 24 euros

3. Power strip:
Brennenstuhl 8-way with surge protection for 32 euros

I ask the electrician to use Cat 7 cable or alternatively to procure this himself (he probably won’t want to).
Then he should install the cabinet in the technical room near the telecom entry, connect the keystones to the patch panel, and make a list which number belongs to which cable.

What do you say about the components? Are they basically okay or would you change something?
Did I forget something? I would get the switch and patch cables in a few months.

What kind of internet connection do you get? DSL, cable, fiber optic? Is the connection directly next to the network cabinet or somewhere else? Depending on that, you might need another cable there.

It will be DSL at first. Our municipality will complete the fiber optic expansion for every household these weeks, but that will probably be too early. The DSL cable must then go from the house connection to the Fritzbox in the network cabinet, right?