I did a similar progression when I was doing body weight exercises.
With the pullup I started doing 10 sets of 4. I progressed similar to the way you recommended and ended up at 10 sets of 8 with perfect form within four months.
Keep in mind I weighed 220 at the time and my back and pulling in general was one of my weak points.
I am doing a similar strategy with the bench right now, although I am eating a very low calorie diet to get my weight down quickly.
Right now I do my bench at 225.
Last week I did 4,4,4,2.
Today I did 4,4,3,4.
I'm going to continue with the progression until I am able to hit 10,10,10,10 without cheating, and probably move up in weight at that point.
If I was eating properly I would imagine I could get there in less than 6 months.
With the pullup I started doing 10 sets of 4. I progressed similar to the way you recommended and ended up at 10 sets of 8 with perfect form within four months.
Keep in mind I weighed 220 at the time and my back and pulling in general was one of my weak points.
I am doing a similar strategy with the bench right now, although I am eating a very low calorie diet to get my weight down quickly.
Right now I do my bench at 225.
Last week I did 4,4,4,2.
Today I did 4,4,3,4.
I'm going to continue with the progression until I am able to hit 10,10,10,10 without cheating, and probably move up in weight at that point.
If I was eating properly I would imagine I could get there in less than 6 months.