If all 4 of those solder points are connected by a circuit path, as it appears to be the case in the picture, then soldering to any of the 4 should work fine, but it's probably suggested to use the one closest to the CLK signal circuit, as the pic shows. If there's any components already soldered to those solder points, like micro resistors or micro capacitors, then you should use the point shown in the pic to reduce signal interference.