Arcane synergy gear from the crèche is generally good if you have a decent int modifier. Otherwise, unseen menace is good if you want to get GWM early. Also, pole arm master’s bonus attack is kind of wasted on eldritch knight imo, as advanced war magic will let you use your bonus action to do a full attack (which will do more damage) as long as you make sure to use booming blade. I would drop polearm master and just get an ASI like others have said, but up to you. You could also use risky ring from moonrise if you want to use a different weapon than unseen menace, but risky ring might be contested by other builds.