I can't find any specs on happ's site as to the amperage draw on the p360. As long as it doesn't exceed 500ma, you'll be fine. That's also assuming you are plugging into a port on the mobo or using a quality powered USB hub. Non powered hubs share that 500ma with any other devices that may be plugged in to it.
Try it out. If you have issues, then run a 2nd or 3rd USB cable to the controllers. Or mount a powered USB hub to the CP, and plug them into that.