when I was only working out only for strength, I got up to 340 bench with no juice. Im 5'10" and was around 200-05 lbs. It was 10 years ago so my numbers below are just guesses. My bench workouts were like yours but a little different. I would do something like this.
Bb flat:
125X10, 175x10, 235x6, 240x6, 245x6, 255x4
last couple sets were a struggle and had a spotter.
incline dumbbells 3 sets, 10 reps
cable flys 3 sets, 10 reps
weighted dips 3 sets, 10 reps
That was my peak before I stopped training all together. took me a few years to get that high. Well, high for me
