The vast majority of Mesh kits limit configurability. That’s because the vast majority of consumers buy this equipment for ease of installation and ease of management. VLAN management or customized radio settings are essentially counter to the concept of the consumer mesh product category.
You’re only talking 120sqm, so it might make sense to centralize your WiFi and have a couple cables to strategically positioned access points. That way you get both top performance and full configurability.