I would goupr the doors according to size, so all the doors you are going to put the same pattern in are together, then rout the grooves on my router table or with a guide, doing one groove at a time in all the doors with the same pattern. That way you don't have to repeat your setup for each door.
I'm not slow, I'm pacing myself!
Isaiah 44:13 Another shapes wood, he extends a measuring line, he outlines it with red chalk. He works it with planes and outlines it with a compass...
Usual kit: Table saw, band saw, dual base router and table, lathe, various saws, planer, sanders, and a multitude of hand tools.