Hi pbeno,
Thanks for adding the specs of the missing two layers.
The specs you listed meet the minimum guidelines here (no more than about an inch or so of lower quality/density materials and at least 1.8 lb density polyfoam in the comfort layers) so there are no obvious weak links in the mattress that would compromise the durability or useful life of the mattress as long as you aren’t in a higher weight range.
If you are confident that it’s a good match for you in terms of PPP (Posture and alignment, Pressure relief, and your Personal preferences) and that you will sleep well on it and it compares well to the other mattresses you are considering or that are available to you based on all the parts of your personal value equation that are important to you then it would certainly be worth considering as one of your finalists or as a purchase.
Phoenix