This is your archtypal peasant getup.
> Leather sandals/shoes - slightly stronger than cloth shoes & wooden sandals.
Spoiler:
Your filthy peasant m'lurd collection wouldn't be complete without this skullcap either
Spoiler:
Alternatively you could construct all the already existing roman items (the headpiece, the armor, not the shield obviously without additional components like plasteel, even the sandals) because in the description they are described as being made mostly quoting the roman armor "Ancient Roman armor. Made of metallic and leather straps." using leather primarily. Just craft refined leather with metal sheets to make new roman objects.
Almost along the lines of advanced tribal crafting, if you want to compare the two (bones vs metal & leather) side by side, roman objects would be a lot more laborious & expensive to make.