Hi, I'd be interested in this.
Portfolio: https://www.artstation.com/bacman12
My work leans toward higher-poly character and hard-surface art (ZBrush, Blender, Maya, Substance), so there isn't much low-poly on there, but retopo and optimizing for engine use is a normal part of my pipeline. If it helps, I can do one armor set first so you can check the style match before committing to the rest.
I'll add you on Discord to talk rates and timeline, my username is bacman12.