Rather than give you bullet points, which vary from boat to boat, I can offer some general advice.
If you find yourselves in a surf zone or crowded shoreline, it's best to fully assemble before launching. Generally, I find it much easier to rig the boat this way and get all the details right. Even prepping the fishing poles and tackle. There are SO many details, when you plan to fish, sail and explore for a full day.
Getting on the water and discovering you threaded a line wrong or forgot to lash something down, or take the wheels off
, or need something in the hull, etc results in a temporary loss of control on the water, usually near shore, where you can become a hazard to others...
If a trailer is involved at a busy ramp, the same rules apply, so we fully assemble and stow all the gear while on the trailer. One person floats it in the water, inserts the drive and pedals out of the way while the other stashes the trailer.
After you check the rudder and rigging, you can come back around the pier or landing to pick them up. You may even want 2 radios in some situations, but that's rare.
With a little practice together, 2 people will soon learn to perform all the "details" from memory, without even talking about it. Then it all goes quickly.
The only other thing worth mentioning is that you'll have an easier time loading and rigging the boat if you leave the Amas in and the tramps off till the very last stage. It becomes quite difficult to reach things in the boat once the tramps are set.
OH - Look out for trees and powerlines! Duh!