I have given thousands of lessons over my career and I have yet to come across a student whose set-up was perfect. Can a set-up be perfect? Absolutely! Think about it. Can you Grip the club properly? Sure you can. Can you Position the ball for the different golf clubs correctly? Why not? What about your Posture, can you make it look like the Professionals on television? All the time. What is so difficult in you having the correct Stance? Nothing. How about Aim, learning to hit it at your target. Like a marksman.
This brings me to the Gospels of Matthew and Luke, ‘Building on a Solid Foundation’. If your swing is built on a solid foundation it stands firm because it is well built. When you’re playing that round of golf and the floodwaters rise (out-of-bounds, water hazards, sand bunkers, trees, etc) your swing will pass the test.