Sorry. Mike, but I cannot give any advice here. Though I have made some stocks for my own use, I am far from being a stockmaker. I am not very familiar with the imperial measurements, but some of the numbers you give in 1/8” = 3.2 mm make me lol. The clothing you wear on a given day while hunting will easily make a difference of 2/8s. It all depends on your own shape. And don’t forget the shape of your face! In making a rifle stock for my own use I am only concerned with LOP mid and pitch at first. Cast is relatively unimportant in a rifle stock. Height of comb/drop cannot be judged without thickness of comb, as a thicker comb appears to be higher. I usually don’t use any cheekpiece, as my face only touches a stock for about 3cm at the comb. A cheekpiece, unless very exaggerated, simply hangs out in the air below my face. So it is just useless wood for my use. The rest is just cut and try until the stock is comfortable for me, maybe noone else. Only then comes the stock finish. And, I don’t shy away from altering a stock I cannot adjust to. My own refinishes usually beat any factory stock finish.