EMI consideration for Microwave Sensor Module

I’m using Microwave Solutions MDU1720 datasheet with recommendation that The length of leads connecting the MDU to the signal processing circuitry must be minimised, to reduce pick up of electromagnetic interference. A maximum lead length of 1.5cm is recommended and screened leads are preferred. Due to other prototype constraints, however, I’m stuck with 15cm long 22gauge unshielded hookup wire for the +5V and GND leads. Would it be likely enough to just twist these leads together and run perpendicularly away from the pcb?