Question about Synology RT6600ax

Question for the community in general: I ordered an rt6600ax here, but I now think that it is oversized for our needs. I use a 4bay Synology NAS, would like to set up remote access via VPN and have everything as simple as possible. We have one smart home device at the moment, an Apple Homepod, possibly a second one will be added. We have a 120m2 on two levels, downstairs room and an office, I want to connect PC directly to router, upstairs is the TV with AppleTV and Xbox, where actually another MeshPunkt should go. We stream etc. I play games from time to time. Question: Is the rt6600ax with a mesh point (WRX560) worth it here or is an rt2600ac with a mesh point (MR2200) or at best a second rt2600ac also sufficient? I want to be able to create a firewall, secure access from outside and two to three networks. Thanks for your input.