Instead of doing BB bench and working up to a 4 rep max for your first set, do either board press, or floor press, building up in fives or triples into a max triple.
Floor Press 135x5 155x5 185x5 215x3 225x3 235x3 245x3 and (max weight)x3 (2nd attempt at max weight or higher)x3
This will probably mean you should do less sets on one of your other excercises, or probably even drop DB Bench.
In fact, I don't know why you would be doing decline BB after DB bench. Do all your BB before your DB.
Also because the Clean and Jerk is so technical, I would suggest against doing it as your last excercise, so you might as well change it to a less technical movement like Pullovers or something.
I don't know when you train your triceps, but a bigger bench can always be accounted to more intensive triceps work (if you are benching with proper technique).
Otherwise there are many Articles like "Big Bad Bench" and "Bench Press 600 Pounds
A 12 Step Program" that cover both technical information and how to structure a routine geared toward strength.