Artisan Naturals mattress for 3 people

We're looking for a mattress that can be suitable for 3 people from very different weight categories.
My weight is about 50 kg and my husband's around 85 kg and our son is co-sleeping with us every other night and he's around 14 kg at the moment.
On top I have frequent back issues as well, so I need something supportive but comfy.
I'm interested in your Artisan Naturals mattress but will it be really suitable for all our needs?