In the video he says if you can perform the sets with slightly more weight with a little longer rest then do that. 8-10 would fall in hypertrophy work (depending on the weights and sets.) to me I think 1 minute rest when doing large movements for powerlifting isn’t the best way. It will effect sets as fatigue sets in. That’s me again some may disagree that’s fine. If you’re wanting to pound technique and perfect it it’s hard to do when half your sets you are grinding them creating more metabolic stress.
He gives ranges based on how advanced a person is and their fitness level. A guy doing 5x10 squats with 500 would most likely need more rest than the guy doing 5x10 at 250. I’d say set rest at a time that doesn’t effect technique, you can complete all the volume and keep it consistent. If its 2 min rest keep it there. If you go with 4 then keep it there. I’m currently running jts program. The volume blocks build so don’t be to anxious to dig a hole. I rest around 4 minutes on squats and deads and 2 on bench because that’s what I personally find works for me.