Hi broncomania,
I’m looking forward to your report once you’ve had the chance to sleep on it for a while.
I hope too that they end up replying to your last set of questions because it would be nice to know for future reference the densities of the polyfoams they used. There is a little more in post #4 in this thread but this is about the Lumina which is a different line with different layering.
It sounds to me as well like you made a good choice by choosing a mattress with less of the softer foam and designed for heavier weights which will help with durability and would also be more suitable for your height/weight.
Congratulations on your new mattress 
Phoenix