You certainly made a good quality choice and I’m looking forward to your comments and feedback once you’ve received it and have had the chance to sleep on it for a bit.
The Elegance is the same as the Pure Latex Bliss Beautiful and you can see the specs of your mattress in post #2 here. It has a 3" layer of Talalay Active Fusion (aka Celsion) and then another 9" of blended Talalay latex.