If you're happy with what you're benching right now, you definitely don't need this program, unless you want to keep going up, if you want to keep getting bigger and better.
And you don't need it if you're currently happy with your size and muscularity. If you're happy with the way your body looks and the amount of muscle you carry, then I'd skip this unless you want to pack on even more muscle.
If you're as strong as you want to be, or if you're as quick and as powerful as you need to be for your school's sport, you probably don't need it.
But if you want to gain more strength, more muscle, and a much bigger bench press that makes your buddies envious and jealous, this will do it.