I think your biggest improvement could be more rest days. I prefer random off days throughout the week.
Here's what I do:
Monday-Lower: Squats, Hams, Quads
Tuesday-Upper: Bench/Chest, Back, Tri/Bi
Thursday-Lower: Deads, Hams, Quads, Another back movement if time permits
Saturday-Upper: Shoulders, Back, Tri/Bi
Also check out Layne Norton's PHAT, which is a 5 day split. Just random ideas of what I like. We're all different. Just sharing ideas.
You're gonna drive yourself insane with all the different body parts. Think of things as a plane of movement: Horizontal pressing with rowing, vertical pressing with a vertical back movement. Deads are a leg exercise to me.