If OP is reading this, go to the Network control panel hit + and select Thunderbolt networking to get the adapter; you’ll want to pick up a Somnet or similar Thunderbolt to SFP+ box (the Atto 3102 may be necessary) which hosts an SFP+ port into which you can put whatever.
This also works with a normal USB-C 3 cable afaik. No need for actual thunderbolt.
No need for Thunderbolt unless you value your time.
I think you'd be more likely limited by IO than bandwidth, didn't take long at all with the 3.1 Gen 2 cable I already had vs the TB cable I didn't have
From the very beginning I loved firewire and target disk mode.