Nice, and timely of you to do it right now. I'm about a month away from putting in my decking on my flatbed as well. I am also considering this microlam material. VERY STRONG.
While your metal strips look super sharp, I think I'm going a different route. I plan to rabbit some grooves in the edges of the boards and polyurethane glue them together with a filler strip (1/2" thick x 2" wide white oak?). I'll then lag screw the wood to the frame.
I was considering using some of that paint on bed liner materail (like Rhino liner). Anybody done that? Thoughts?
