I am fairly new to networking but that sounds correct with my thinking. I’m actually after a super similar setup. I got a router that can easily handle 1gb internet which is the best I can get anyway. The router I got has 5 gb ports, I’ll use that for my actual Internet connections. On my homelab network side I’m just going to use that 4 port 10gb Switch for communication between the nodes themselves which is where I care/need faster transfer speeds. If/when I use all those ports I’ll upgrade the switch.

Have you checked out mikrotik? I’m not sure if you can flash to them, but they come with routeros a linux kernal based os mikrotik developed. It’s insanely customizable and feature rich. They are starting to dip toes in enterprise gear as well. Not sure about switches that size but I got a 4 port 10gb MGBASE-t switch with a dual arm chip and a 1gb poe management port. Has the routeros license too( all hardware comes with a license for routeros in perpetuity) all for $190.