Dumbbell Bench instead of Barbell. If the Pectorals and synergists / stabilisers like Arms, Delts, Lats, Traps, Rhomboids etc etc, work to lift a Dumbbell, there's equal workload in a sense.
Barbell Bench could possibly cause one side of the body, to become more reliant on the other side, making that side lazier and less progressive, and then you might get decreased growth potential on one side.
I thihk also, you might be Deadlifting a bit too much. Also, slight changes in Deadlift technqiue each time, won't necessarily change much.
You could be working certain areas a little more one time, than another, depending on the Deadlift type, but ultimately you could well be overdoing it on the main areas, like Lower Back and possibly Legs, etc etc.
I'd take out the day 3 one personally, and do the Day 1 and 5 ones.
If you were to do Preachers, you could use a Cable and do them two handed.
Or go for a straightforward E-Z Bar, or possibly better yet, E-Z Bar Reverse Curls. I see those as a good choice, because it's using a Pronated Grip, you should get some good Forearm interaction too.
Concentrations can tend to isolate Bicep, and not give Forearm as much attention as it could get.