Hey folks, first post here - it’s gonna be long, so I apologize for it and appreciate any help I can have here.

I’m a software engineer working at home and just purchased my first house - found a good opportunity in the market and went for it. Now I want to design a good network infrastructure and for that I need your help.

I’ve been looking for Ubiquiti / Omada / etc setups but I have a major issue here: in my country (Portugal) modern houses have now a specific place for Communication infrastructure (Data, TV, Phone) called an ATI cabinet from which it serves the whole home via RJ45 cables on each division. The ISP fiber cable and modem/router goes to this really small cabinet (23cmx28cm) and then it serves the whole house. I think a small gateway router / switch could fit there. But I don’t want to use the ISP router. I want control - VLANs, separated networks with different ACLs, etc.

3 bedrooms (one of which is going to be my office) have only 1 RJ45 connection each, my living room / kitchen has 3 connections available. I want my office to be my home lab - I have a mini PC running Proxmox to have Home Assistant, etc. What could be a good setup for me to have? Any hints?