Help selecting a dedicated router? (Gigabit, POE, PPPoE support, SFP nice to have)

Fair enough, thank you i'll give that a shot then first i guess.

Doesnt seem like there is an official RPi4 OpenWRT build yet, but i found this thread:

is that what i should follow?
Would OpenWRT just simply recognize the USB ethernet jack?

or should i be running a specific OS instead?