There's a few prerequisites that make this all very realistic if the time is put in

* An LTE remote access box connected to a few switches management ports so you can configure the switches yourself

* Ensuring that the vendors pre-cable the racks and provide port-mapping data

* Ensuring that the vendors set the machines to PXE boot

* Ensuring the vendors double-check the list of MAC addresses of the HW provided for both in-band and oob