Planning the Main Interior and Mezzanine Layout

What happens here

Upon entering the shop, the creator reveals a currently disorganized but vast interior. He describes his plan to build a separating wall to create an open workshop area on one side and a two-story living space (mezzanine) on the other. He envisions the upstairs having 3-4 bedrooms, a large open-plan living room, a kitchen, and multiple bathrooms (including a Jack and Jill style for guest bedrooms and a half-bath for general use). He specifically highlights the large sliding glass doors upstairs, which will open onto a future walk-around deck.

Goal: Design the internal layout for combined living and workshop spaces within the barndominium.