I also like this split but do it a little different.
Day 1 chest, front & side delts, Tri
Day 2 back, traps, rear Delts, bi
Day 3 legs, lower back and abs.
Number of sets per day varies. 9-12 total on majors, 6-9 on minors. Never more than 30 in a day seems to be my limit. I keep busy...