Thermals are pretty much ok as long as you dont have the cpu at 100% 24/7. I've never had it go over ~50°C in normal use in my basement.
Not sure if it can handle gbit on 2 ports but Iperf between two vlans on the same NIC works flawlessly with lots of cpu to spare

Mine sits at around ~11W during normal usage (~40mbps into a wireguard tunnel)
