fortunatesun gave you a nice routine.
You can do bench press with this frequency though, Monday-Thursday-Sunday-Wednesday-Saturday-Tuesday-Friday-repeat. Follow the the warm-up scheme of the 5x5 but on the last set rep out with the 225, trying to do one more rep every workout, but don't do forced reps, these don't count and are bad for your CNS if done systematically, so just have your workout partner help you out on the last rep and that's it.
Don't do any other exercise for chest, focus just on the bench and you will have those extra 4 reps or even more after three weeks.