That should be fine, though some suggest to limit barbells on a deload. Just try it and see. Dont go over 60% of your 1RM for these, generally. I would reduce the weight more than what you have listed, personally.
just limit the acc. work. stick w dumbbell/cables or barbells with higher rep for da pump.... then call it a day. You can finish up a deload in about 20-30 minutes after your warmup