Hi Carolina,
I would be very cautious with using latex layers that are very thick and soft in the comfort layers of a mattress when you are in heavier weight ranges. While it can be very comfortable in a showroom … it can also create alignment issues for some people when you sleep on it over the course of the night.
The specs of the Beautiful are listed in post #2 here and the closest approximation with a SleepEz 13000 would be two soft layers over two firm layers but it uses a wool quilted cover which would change the feel compared to a stretch knit cover (see post #6 here about wool quilting).
The Pamper uses a 6" 40 ILD support core with 2" of 21 ILD in the comfort layer but their toppers are very soft (in the range of 14 ILD - 15 ILD) which may not be the best choice for someone in a heavier weight range. In thinner layers you could easily “go through” the comfort layers and feel more of the firmness of the firmer support core and in thicker layers there could be an alignment risk as the heavier parts of your body (pelvis) could sink down too far before being “stopped” by the firmer support core.
The closest equivalent to the Pamper that SleepEz offers is their 9000 natural latex mattress here with two X- firm bottom layers and a soft top layer but they also have a wool quilted cover. They don’t use layers that are in the 14 - 15 ILD range because of potential durability or alignment issues with heavier weights so the Pamper / topper combinations wouldn’t have any SleepEZ equivalents.
The SleepEz 8" special would also be “somewhat” similar with a top 2" of soft and then two X-firm Dunlop layers underneath. The types of latex would be different (it uses Dunlop in the bottom two layers and 100% natural Talalay in the top 2" instead of the blend in the Pamper) but it also uses a stretch knit cover like the Pamper
It would be nice if PLB had the option of using a firmer topper that was more in the soft range rather than the ultra plush toppers they use. The Pamper already has 2" of soft latex and with a three inch topper you would have a comfort layer that had 5" of soft latex (most of it super plush) and with both toppers you would have 7" of soft latex (including 5" of super plush) in the comfort layers which for most people would be a very risky construction.
All of the Talalay made by Latex International is Oeko-Tex certified which is a very stringent testing protocol to make sure a mattress has no harmful substances or VOC’s that could either leach out of the mattress or offgas. Even people who have medical issues with things like MCS (multiple chemical sensitivities) usually do very well with blended latex. The “sweet” smell that is part of the formulation of Talalay latex is mild and fades fairly quickly (see post #2 here).
Their cover only uses 1% - 2% synthetic materials (the spandex) and the rest is a viscose or rayon material which are both semi-synthetic or “artificial” fabrics that are sourced in some type of viscose (often some type of wood pulp such as beech or bamboo). It’s a high quality material with a good “feel” and moisture wicking and ventilation properties that many people like although there are also many people who prefer a quilted cover in a latex mattress either for reason of “feel” or using materials like wool for it’s cooling and temperature regulating properties.
Of course the SleepEz also has the option to re-arrange or exchange layers after a purchase if you need to change pressure relief or alignment of fine tune the mattress and has return options as well so this may also be an important part of your personal value equation.
Hope this helps in your final choices 
Phoenix