My recommendation is to set up a couple configurations -
Open - locked in the "open" position
Closed - locked in the "closed" position
Limit - Use a Limit Mate so you can drag hinge through the full range
"Free" - No mates - I don't believe that this is necessary any longer, but there used to be an issue with using multiple hinges in a flexible assembly situation. This was effectively a way to let one hinge drive the flexible assembly, and the rest of the hinges were set to "Free" (no mates) so that they would "follow" the lead hinge. (Like I said, it was an old workaround, I don't think it is necessary any longer, but I haven't tested it.)
Just to clarify... You are requesting assistance with component selection and design of your product, not with how to represent it in SolidWorks, right?
Yes, that is correct. I guess I should have made it a little more clear. Thanks for pointing that out.
Piano hinge. Weld it or use flat head screws.
I agree with McMaster-Carr as a easy quick source for hinges. Piano hinges are great as long as they don't get in the way. I'd consider some cheek plates on the fixed section with a series of holes in an arc pattern. This combined with a pin and a hole on the moving section would give you some adjustment.
If it is to fold "down" as shown, your hinges will need to be located below.
A few other sources of hinge components to help with your thought process are: