How to protect finish on ED car?

[E82tt6]

I think I'm close to settling on an E92 M3 for my 135 replacement, and I'll be doing ED. I'll most likely be getting Jerez Black or Interlegos Blue, and given the tendency both these colors (especially Jerez) have to showing minor scratches/swirls, I'd like to do something to protect the paint as soon as I pick it up, to save myself work when the car gets home. I like doing the Zaino treatment on new cars, but I don't think I'll have to chance to do that there. The car will have 0 miles, so paint should be flawless.

Any ideas? Maybe a fairly high quality liquid carnauba or polymer? Just do one coat of Z5 and top it with a decent carnauba?

Any advice would be appreciated! My 135 was Blue Water, so I was less concerned about keeping it 100% flawless on the trip, and just did QD spray downs.