A couple of questions from a newbie

[4th Gen C-10]

I am getting ready to start pulling apart my 69 C-10 and I'm not quite sure of the order to take things apart. This is what I have figured out so far. Let me know if this is right, if I have missed anything, etc. I am getting the camper shell taken off on Tuesday.

1. Remove battery
2. Drain fluids (gas, oil, tranny, brakes, radiator)

What would you guys recommend from there?

With regards to the bed. Should I pull it all the way apart or can I keep it bolted together (assuming there is no rust)?

Here are some pics and a link to my build thread is below (it has the backstory for the truck).