If you have quality Cat6A pre-installed by good vendor then use it.

You could also consider NIC's that are multi-rate (1, 2.5g, 5g, 10g). That might give you some future flexibility.

https://www.amazon.com/StarTech-com-Serial-Ethernet-Converter-Device/dp/B01FJSW0OG (Yes, I know the link looks stupid)

Now buy a good managed 10g-BaseT switch.