[Jeff Lee]

Different plunger heights will change the lift with a ball / stud type rocker arm (GM products for example). It won't with a fixed rocker like a mopar shaft.

Wade, the reverse is true for tech. If you have a plunger height of "X", make sure tech is the same height in relationship to the distance from the base of the lifter to where the pushrod seats, i.e., you have to know the lifter length, not just how low the pushrod cup is in relationship to the top of the lifter.
Like Floyd said, it's nothing to beat yourself up on. I would be more embarrassed if you were leaving a lot on the table with sloppy specs. The numbers you gave show you are pushing up to tolerable limits. Good, that's what makes it, not sloppiness!