Sanding out orange peel in clear what grit to use first?

If I get a ton of orange peel, I will use 800 on a D/A to knock down most of the "texture", leaving just a little. I'll step up to 1000 wet/dry by hand on a block using soapy water. Recently I did this, followed by 1500 on the D/A and finally 2000. At this point, the orange peel and sanding scratches are usually gone.
I read online that some shops are doing D/A sanding with water up to 4000 grit!
If you don't like buffing, THIS would get you back much of the shine before grabbing the buffer.
I recently finished a 72 Duster for my brother-in-law. He chose Inferno red crystal pearlcoat with the 71-72 style hood performance paint. he wanted a gloss black instead of Organisol. The finish is so smoothe I can see my wrinkles and a few gray hairs in it.