Back button auto-focus on Nikon N80

I’m setting up back-button focus on a Nikon N80. It looks like you set up the focus mode switch to “C” and set custom settings 11 to 4 (ae/af button initiates focus), 7 to 1 (sets shutter release button to exposure lock) and put the AF area mode selector to [+] (dynamic AF mode. It seems to work as expected, does anyone have any further input?