Bras inevitably stretch out over time. If your priority is with the bra lasting as long as possible, start on the tightest hooks, and move outward as the bra loses stretch. (However, we recommend starting at the centre hook if you want the shoulder straps to be at the best position).
I don’t understand #5. Shouldn’t one start on the loosest hooks, and as stretch happens, move towards the middle hooks to take up the slack, then end with what would have started as the tightest hooks?