ESC Signal Ground Wire Connection

Hello All,
I would like to make sure if it’s acceptable for the ESC signal ground wires to be soldered on to the GND pad (1) and (2) on the attached picture below since the other GND pads are already used by M1 - M6 ESC GND cables. I’m thinking ESC signal ground wires for M1, M4, and M5 are soldered to GND pad (1) (M8 GND pad) and ESC signal ground wires for M2, M3, and M5 are soldered to GND pad (2) (M7 GND pad).