I did this job not long ago, I didn't have to disconnect any injectors on the drivers side, the only real issue was loosening the fuel line enough to gain clearance to remove the valve cover. I don't remember having to take the egr loose, but it's not hard to do if you just remove it from the intake where it just bolts up rather than taking the pipe loose.
As for the passenger valve cover that was a little more difficult cause the back bottom bolt was hard to get to, I had to use a 1/4" socket wrench with long extensions, and a swivel right before the socket. I also had to disconnect the rear most passenger side fuel injector for the valve cover to have enough clearance to lift up out of place. Be careful those connectors can be brittle and break.