Hi dankchicago,
Welcome to the Mattress Forum! … and I’m glad you found us 
I would be very cautious about using anyone else’s experience or mattress reviews on a mattress as a reliable indication of what you may feel on the same mattress because a mattress that feels too firm to one person can feel too soft to someone else (and vice versa) and a mattress that is a good match for one person or even a group of people in terms of PPP may be completely unsuitable for someone else to sleep on … even if they have a similar body type or sleeping style (see post #13 here). In the end the only reliable way to know with any certainty whether a mattress is a good match for you would be based on your own personal testing or actual sleeping experience.
Having said that … a forum search on Cool Luxe (you can just click the link) will bring up all the forum posts that mention it.
I would be aware that there are hundreds of different latex mattresses that come in a wide range of firmness levels and “feels” and use different types and blends of latex or have very different designs that can be very different from each other. Some “latex” mattresses also only use a small amount of latex so only testing one latex mattress (or one mattress of any category) won’t give you a good idea of latex mattresses in general.
I haven’t heard of any warranty issues with their memory foam mattresses (although they have only been available for less than 2 years) but both Dreamfoam and Brooklyn Bedding are members of this site which means that I think very highly of them in terms of their quality, value, service, and transparency and I know them well enough to know that you certainly wouldn’t have any issues with any legitimate warranty claim for a mattress that had defective materials. Having said that … I would also be aware that mattress warranties only cover defective materials in a mattress and not the gradual loss of comfort and support that is the biggest reason that people will need to buy a new mattress (see post #174 here about warranties).
I would also be somewhat cautious at your weight with choosing such a soft mattress in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) or with thicker layers of 4 lb memory foam (see the guidelines here) and latex would be a more durable choice than medium density memory foam.
Phoenix