Shoulder press Workout

Shoulder press 3x5
3 cluster reps at 95% then last 2 at 85%
30 secs set 1
40 secs set 2
45 secs set 3

Just to clarify one set would look like this with 100kg Shoulder press.
95kg rest 30 then 95kg rest 30 secs, 95kg rest 30 secs, 85kg rest 30 secs and 85kg rest 30 secs

Set 2 same but 40 secs intra set rest!