Obviously he took more than that.
I couldn't began to guess what he took. By 17 he was 160 at around 10% bf. 8 years later and 25lbs of stage weight and maturity minus water so around 5 lbs. So and 185 at 4%. Which means he'd be around 202 at 10%bf. He's was 5'9 with an ectomorph build.
That said, he obviously didn't take much. Based on everything I know about him, he is very methodical and conservative.
Since he did mention Dbol and primo. My best guess would be he never exceeded 25 mg of DBol per day 200 mg of primo. That's at most. I think he wasn't lying in that poem. Again, total guess.
These guys weren't drug monkeys like modern guys