Sounds right to me.
I was also wondering about the last transmission right before you stop transmitting APRS. I think the rule is you have to ID yourself in the last transmission. But if you set up the APRS to transmit your callsign say every fourth time or even every other time, then you are likely not going to transmit your callsign on the last transmission unless you have your FCC callsign in the Callsign box (which transmits every time) instead of the Text box (which you can set the frequency.)
Comments?