Automotive Workshop CAD Designs

I have a Crowdfunding campaign happening in August to raise the required funds for my business GreaseShed, a community automotive workshop. Visit [login to view URL] for more information. As I don't have a workshop to showcase, I am in need of workshop plans etc to display in my crowdfunding campaign and to provide to my 3d modeller for artist impressions. I want to be able to show rough concepts of what I have planned for GreaseShed. The plans do not have to be exactly what will happen but have the basic outline of the overall concept. The main components would include Basic workshop floor plans showing workshop bays, equipment, tools etc. An individual bay plan (tool placement, benches, etc) Common room floor plan Depending on how much has been raised, I am working on two concepts. 2 bay Workshop (approx 250sqm) 4 bay Workshop (approx 450sqm) Accompanying the workshop is a common area which is known as the "Man Cave". This will be used as an area to socialise, lounge, media centre, etc. This should be a size of around 100 sqm. The 3d modeller who is doing the artist impressions has asked for the following: - CAD floor plans - CAD Exterior elevations (Standard warehouse type building with front entrance) - Interior joinery elevations (If you can not complete these, no need as I can supply reference images) As this is all speculative and I do not have a building, the plans need to be a rough idea on what the facility may look like with all the components.