Hi Sir,
I have into 3d modeling for more than 3 years. I also worked on 3 game projects made with Unity. I have modeled many architectural model, Car models and gun models for different games. This all Models are low poly optimized for game purpose. Some of them are also optimized for mobile games. Also for textures I use substance painter(PBR workflow) so I can provide every texture Map which is required including(diffuse, normal, roughness, etc.) which will make realistic textures. I have an architectural Realistic low poly scene currently ready on Unreal engine I can show you the live footage of the project. as you suggested i would like to talk about the project in private.
If you want to see my previous work feel free to contact me.