it's all new to me too. I know I need to take the play and flex out of the linkage and I need enough travel to bottom the MC without hitting the firewall with my fat panicked @ss hammering that pedal down. Once I get that and I'm sure the lines are bled, I'll prolly drive it for a while and see if the pedal height bothers me, then I'll adjust that.
This I think is the video that shows more about how to fiddle with these things than the rest:
https://www.youtube.com/watch?v=EGanbFC-8v8&t=243s