Stereo audio recording setup

Need this to record classic grand piano. Setup diagram:

• LCT 040 x2 link
• 2i2 gen3 USB audio interface link
  • this is the main magic. it can directly connect to computer and provide 48v phantom power.
• Need another mic stand too!

On the Mac side, I can use GarageBand. Because of the audio interface, I shouldn't need to create aggregated input device.