I don't think EZ will be killed. He's the main character of this show. This isn't Game of Thrones.
I guess the Mayans, cartel, and Adelita's group are going to be starting a war against the government? I don't really see how that's going to work. I'm guessing she's the 3rd party at their neutral meeting.
Is that cop on their payroll? I can't remember. Why didn't they alert him somehow that he should be the one to check the trunk instead of letting the other guy check? Doesn't seem smart, obviously. Like when they got out of the car they should've whispered "trunk" or something.