Firewalla gold plus is another option
Exotic-Grape8743
Absolutely correct but from the context of the OP’s post it seemed they were trying to get more bandwidth for when multiple clients need it at the same time. Exactly what LAG connections can help you with. Of course it is much better to just use higher speed links but LAG connections certainly still have their place when you just can’t simply upgrade the connection speed at a reasonable cost.
Ring like topology is anathema to Ethernet networking. If you really somehow create a ring in your network it will cause problems. Most commonly your switches will detect a ring through spanning tree protocol (STP) and shut a link in the ring down. You always want to have a star topology in Ethernet networks. If you want more bandwidth or redundancy in critical links, use LAG connections.
What you priced out will work just fine. These are very good and the controller allows you to not have to subscribe to the cloud service. Any POE+ switch should work with these access points but if you don't actually need 24 ports I would just get the same brand version and centrally manage.