That one is prefect for the job
I use the exact same one on my HK-450.
Be sure to
disconnect the internal BEC from your ESC! (in case it has one). To do so, cut the red wire from the (servo)cable (black/red/white) that runs from the ESC to the receiver.
Keep your ESC on the
throttle channel. And connect the UBEC to the
battery/bind channel.