Large coffee shop and plant store floor plan design

I'm starting a large coffee shop/plant retail space in Northern Minnesota. The building design will be a timber frame monitor barn style structure, similar to the picture uploaded. I've also uploaded a general blank outline of the structure. The drive through, entrance to outdoor patio, entrance door to coffee shop, and delivery doors need to be on the sides indicated on the diagram. I would like a balcony somewhere in the space. There will also need to be an area for retail sales of plants, pots, etc. Customer flow, efficiency, and visual impact are important to me. I like windows, so there will be quite a few, especially on the north, south, and east side in particular. The size is about 60 x 80 ft.