Planters Another planter question

[deere755]

I have a john deere 494 1 row planter. It was made with a 2 speed sprocket on what I call the driven sprocket. One is a 10 tooth and the other is a 12 tooth sprocket. The driver sprocket off of the press wheel is a 18 tooth sprocket. I am wondering what kind of populations I will get with those 2 settings with a 16 cell and a 24 cell plate combination or spacing. I will be planting in a 30 inch row. I would like to be able to plant around a 30,000 plant population if I can. `