Second what Glen said.
Getting a self-built kit from RS might be a better path. There are plenty of resources and video on the forum to get yourself familiar with the process, it’s not as difficult as it might seems. I think the only thing I need to stress is “measure twice and cut once”.
Aside from the readings and research here, have you try contact your local garrison?
They might be able to offer some advice, say, based on your height and body size and short list some vendors for you to make contact with.