What do I do first?

Building on my first post, I wanted to ask people who have done this before. Zone 6b in a prairie, high altitude climate. Here’s pictures of plants on the land (avoiding the skyline for safety). I’m wondering if I can just throw everything in the ground Year 1 and see what grows or if I should bother strategizing it. And how do I best go about improving this soil? I’m not doing this for at least a couple years, but I want to be ready.