I was lucky enough to get the Allagan Pants which helps. But overall, you should worry about your DPS stats instead of focusing ACC. When I got the Allagan Tunic of Casting, I replaced my DL Cowl right away. I ran through Turns 1-4 with 389 accuracy, which is not ideal, but I got the job done. Now with more gear drops, I'm sitting at 424 ACC.