Bench press is all you need.After a while you hit plateaus which regresses your progress in the gym. Start implementing few variations in your chest workout and reduce your frequency of hitting chest.Here's an effective technique to improve your overall workouts and over come this particular problem of yours.REVERSE PYRAMID PROGRESSION :Start your exercise with a medium weight just to warm up the muscle and joints.then instead of climbing your way to weight like the traditional way of sets go, start with your heaviest set.Eg.If you bench 80 kgs Max for 10 reps then start with 80 kgs and rep it for 5–6 reps.then your second set should be 10% decreased weight of the original set.which means that your second set should 72kgs for 6–8 reps.And similarly the third and last set should be 10% decreased weight of the second set for 8–10 reps.This technique helps you to train at your full potential because your muscles are fresh and not fatigued which in return promotes better growth.In short lift heavy,and heavy and heavy with time and you should be good to go.