If you are training for 1 rep max cut out the sets of 12-15 to start.
Warmup shoulders and chest
Set 1- empty bar x10
Set2- 135 x5
Set 3- 155x5
Set 4,5,6 185x5 add 5lb if easy
The warmer your muscles are the stronger they will be. Make small jumps in weight not 50lb from set to set. Example if I bench I start empty bar,135,185,225,245,275 will be my first working set