How would you set this network up?

I would like your input on how to setup this network - to give me ideas on how to best pull it off.

ISP is a fiber internet provider in Mexico.

Current configuration:
ISP modem port LAN 1 - Arris Surfboard mAX Mesh network - 1 satellite
ISP modem port LAN 2 - Linksys Velop - 1 satellite
Arris Surfboard Satellite LAN 1 - Apple Airport Express

Reasoning for the setup

Had an existing network in the house of the Linksys Velop Mesh. Didn't have the network at all in the bungalow. We bought the 802.11ax Mesh Network for the range increase and some speed. We upgraded our laptop network cards to 802.11ax.

Thoughts:
I am considering putting both the Airport Express and the Velop systems into "bridge" mode. I would connect the main Velop into LAN port 1 on the Surfboard instead of going through the ISP's LAN 2 connection.

This should enable me to use the same SSID throughout the entire network, correct? The same network key would be used, correct?

Let me know what your thoughts are and how you would handle it.

 

First thing I would do is disable the wifi on the provider modem. The combined modem/wifi devices are junk and don't work well.

Fiber internet... the hand off from the provider is either fiber or ethernet?

From there if you have a choice looking for a router w/ SFP+ connectivity would allow you a bit more control and save you any rental fee you may be paying the provider.

From the new "modem" which would actually be a router if you supply your own then using the AX router you picked up shouldn't be much of an issue. AX though for distance isn't really the purpose for AX since to get the full benefit of the speed / congestion mitigation is low distance. To get the distance you'll be using the AC / G bands the further you go which in G you max out at ~300mbps if properly configured but your distance will be significantly further. If you get mesh pods in bridge mode on different channels to form the mesh you should be able to get seemless handoff between each one as you move around. In this setup the SSID/Key shouldn't be an issue since everything will authenticate back to the router.