Thanks for the input. I had changed the second set after "531" to a target reps style set. So on bench day, I do 531 bench sets and then 3 sets of squats with a total target of 24. Visa versa for the squat day, with a target of 30 for 3 bench sets.
Progress is good, Im on target for 650lbs next month! Ive revised my target for 1 yr to 900lbs.
For beginners, its easy to follow, easy to program progression also and can be tweaked to include volume as well as the heavy 5/3/1 sets. It concentrates on the big 4, is basically full-body and I get the routine done in an hour or less. The only thing i dont do is the de-loading week every cycle, ive just done my first deload after 15 weeks.