Max-OT Training
The first thing that you are going to need to do, to rack up those numbers, is Max-OT training. What this means is, you do lesser reps with very heavy weights. Lifting at 80 to 90 percent of your 1 RM. This will apply the most stress to your muscles, and cause them to grow and get stronger faster.
Isolate
True, compound exercises are the best to build the most muscle the fastest. But if you are looking to add 50 pounds to your bench, you're going to have to do some isolation exercises. The areas you will have to isolate are: front and middle delts, all heads of the triceps, upper chest, lower chest, and back. Here is a quick possible exercise list
Shoulders:
-Shoulder press, decline push up, lateral raise
Triceps:
-Dips, kickbacks, pushdowns
Upper Chest:
-Incline bench, incline dumbbell bench, decline push up, incline fly
Lower Chest:
-Decline bench, decline dumbbell bench, decline fly, incline push up
Back
-Inverted row, lat pulldown, dumbbell row, barbell row, reverse fly
Focus on all of the supporting groups for the chest, and you will surely increase your bench drastically in no time at all.
Get Enough Rest
If you don't give your muscles the time to recover, so they can get stronger and bigger, then your workout will be wasted. This will prevent you from ever seeing any gains, and could actually decrease muscle and strength. Take at least 3 days off in between working out your chest, preferably 5. Since you are lifting so heavy, and with such a high percentage of your max.
Dynamic Lifting
Another thing that you might want to try is doing some dynamic lifting. This focuses on the explosion portion of the rep. Which in this case is lifting the bar off of your chest. To do dynamic lifting, choose a weight that is 30 to 50 percent of your max to start, you can work your way up. Lower it to your chest, and then explode it off as fast and with as much power as you can. Start with 3 sets of 6. Increase as you get better.
Follow these tips, and you will be sure to impress some people with your numbers.
If you have any tips or questions, feel free to comment.
Dedication is Everything.