Hi!
I am professional 3D artist with years of experience working on various projects, mostly product visualization.
I can do this project fast, and in high qiality that you will be sattisfied with.
Software I use for modeling and rendering is 3ds max + Vray, and I am also quite familiar with Marvelous designer, which I use for garment creation.
This project wil be done using this software, to get base meshes, with all variations.
You will be able to change everything (pattern, different cuffs, collars...) in just few steps.
I will create Photoshop file and action, so you can modify and save all pieces in one go, and save them in separate folder.
High level of customization can be achieved that way, without any complicated steps and procedures.
Hope that you are interested in my bid.
Thanks,
Jovan