I would without reservation go with a proper wax, and indeed i practice what i preach, however, I do love detailing.
Waxing is something your doing at home - ceramics tend to be done by businesses - even though you can do it at home and anything done by someone else means you have no control over the quality of application.
Wax, I use R222 even though I do have access to Zymol Vintage wax - the difference in price R222 = £60, Zymol = £2400 - after years of detailing I really cant find any difference between the two products.
If you prep your car right just the once and apply the wax you will be stunned by the results and going forwards the 6 monthly application of wax (I do it just before and just after Winter each year) will be less than a days work and the easiest/quickest way of doing it is with a (DA) orbital polisher, a soft pad and meguires 80 speed glaze. A DA polisher is safe to use even for a complete novice and you wont burn paint or wear through on swage lines - bugger all to be afraid of - I use a DA but do have a rotary, simply because the DA is lovely to use, the rotary is an absolute pig plus high points/swage lines its so easy to overheat the paint and burn through - only used by me for really bad areas as its a lot quicker to sort out the paint correction needed.
Paint has a level of hardness - the lighter the colour the harder it is, White is very very hard, black is super soft - darker colours suffer swirl marks far more easily and even if you wash carefully you cant avoid some light swirls.
To see those swirls - look at the panel like you would a mirror and look for the sun - all the swirls will be seen, swirls impact on the light refraction, DA polish the panel and look again at the sun - the difference is staggering - it results in a deeper looking colour and almost a wet look. a good waxing - a pea size blob of R222 in your palm, rub your hands together then massage it onto the panel - you will look a twat, leave for about 5 mins and buff off - do it panel by panel, don't leave wax to dry because its hard work getting it off and carnauba doesn't leave white marks if you accidently get it on plastic trim.
Chips - maybe have PPF to front end and if you don't have mud flaps do the sills and leading edges of the front wings too. Chipex kit for touch ups.
Completely agree with 99% of this Glyn - good stuff! I also enjoy detailing and use carnauba wax on all our cars.
Just a couple of questions / observations - I use PS21 / R222 for our day-day cars and Zymol Japon on my NSX....though I have also used this on my wife's red Fiat 500e and the M3 on occasion. My feeling is that the Zymol lasts a good bit longer than the P21...but this may be just me mentally justifying the extra cost!
Also, when you say car paint hardness varies (absolutely agreed) from light (hardest) to black (softest) are you just talking about Tesla paint of paints generally....if generally (IE across manufacturers) this is not my experience.