This is what i use hope u can follow my rambling:

For saddle height .883 x inseam no shoes, (to pubic bone).
I like KOP or possibly just a tad behind the pedal.
Level seat with handlebar about the same height.
Roughly if you hold your elbow at a 90 degree angle and touch it to the most forward part of your seat your handlebar should just almost touch your outstretched fingers, mine is a little past that. There are formulas but this is a quick ballpark for me.
Saddle for and aft and seat height are the things to get first then you get the right stem to make the arms work, the legs come first.