I'm not sure full body workouts are optimal for bodybuilding. I know they were popular in the 40s and 50s before drug use became widespread but I mean even with all the drug use that is going on there has to be a reason as to why bodybuilders split up the workouts.
full body workout is the best choice for the natural lifter, countless "vets" will tell you the same
the reason is simple
body part splits have too much volume all at once and at the same time not enough frequency
at least that's my understanding
and i tried both and found a lot better results with full body approach. and with full body i dont mean garbage like layne norton i mean good old 5x5 shit
peace