Unless you have already planned on it, strongly suggest you also install the Autopilot Knob Panel. It compliments the Autopilot Control Panel nicely. I suspect you will use the Knob Panel more often than the Autopilot Control Panel.
Just be aware that the control panel only works in the "expert " mode. If you operate in that configuration, it is worth the extra bucks. Otherwise, just use the panel controls in simplified mode.