Rocco NY

I definatley dont walk thru parking lots talking to myself saying “im glad thats not my car...or that one...she must use a drive thru daily...”😜

I’ll legitinately lose sleep over swirls in the paint lol.
 
with that said, my paint doesn’t have any.

It really boils down to your opinion of the paint condition and what you're happy with. Coating will give you extended protection..significantly more than a wax...and a ton of gloss, but it will lock in whatever is there. Swirls, etc. The basics of your process look good if you do go the coating route, and you can still use the VRT for the tires and BG for inside the windshield (eliminates the haze).
 
Check out this article for some more on product differences, layering, etc.
 
 

Like Falcaineer said,..its preference..if ur happy with the paint the CC is awsome. Water shoots of the paint and, at least for
me, easier to maintain. No need for monthly, bi-monthly coats of wax.  
 Some people(like myself!!) can barley breath at the site of swirls!!!! If slight swirls
dont bother u go for it. 

If you clay bar, you’ll want to polish the paint. A clay bar is an abrasive. It will mar the pint. 
 
A ceramic coating has amazing hydrophobic properties. Putting anything on top of the coating (besides a silica spray sealant such as ceramic boost) will affect the hydrophobic properties of the coating. 

If you are ever claying, polishing, paint correcting, etc, strip wash is an unnecessary step.  

You definitely  dont have to do a paint correction. If you are happy on what it looks like just know that the Ceramic coating/spray just locks the paint in.  It does not reduce swirls.  
If ur happy with it thats all that matters.  
 The claying could introduce some swirls,   Would members recomend Revive
hand polish after claying? If he doesnt want to use a SK???  
As far as your Mb..the DS can def be used in betweeen washes and as a drying agent.  The BG shouldnt be used on paint if its cermic coated (some may argue othetwise) but a neat trick the forum has exposed is using it on interior windows.  Leaves them near invisible!
gooD luck