There’s no chance you can cut a .07 hole with any plasma cutter setup. Only way you’re gonna cut a hole that size accurately is by laser.
The average plasma kerf is 0.055”. It’s difficult enough to cut a hole 1/8” which is about as small as you can probably even get CAM to let you cut with no lead in or lead outs.
Are you using a mag drill or mill? You can get away with a 3/16” hole and still have a roto broach pilot pin stay on target.
Why don’t you just cut the entire hole from the start with the plasma?