Agree with Spud. I reordered your list making a few changes that I would add. Many, including me will have the camper height a little low, so that the hitch requires resistance to get under king pin. this will ensure that you aren't "high hitching", which can lead to unexpected situations. Also, Raising front legs 1" off of ground before removing wheel chocks, and do a "pull test" to ensure you are truly hitched up, and don't drop the trailer off the hitch.
1). Raise rear legs
2). Inspect hitch
3). Verify "open" position of jaws.
4). Open tailgate
5). Back up truck close to hitch pin
6). Adjust camper height to just below hitch pin height on camper to jaws on hitch, so that king pin will "ride up" hitch.
7). Back up truck to lock camper pin into jaws on hitch.
8). Verify jaws are locked around pin.
9). Replace safety pin to lock hitch
10). Attach Safety Breakaway Wire to hitch
11). Plug in cord for lights and breaks.
12). Raise tail gate
13). Check to see if all lights are working.
14). Raise front legs 1" off ground
15). Perform "pull test" to verify securely hitched
16). Remove wheel chocks
17). Test trailer brakes.
18). Drive off
Dave
2016 F350 Lariat 4x4 FX4 SRW CC SB 6.7 Magnetic Metallic
2017 Forest River Cardinal 3850RL