

Help with shed build
Hello Shedditors,
I am building a cabana in my backyard. The first photo is a close render to what I am going for. The second photo is the spot where it will be built - the large rectangle is the total covered area, and the small rectangle is the enclosed area. The large area is 18 X 10 ft and and small area is 11 X 7'6". The base is an existing stamped concrete patio - not perfectly level (slopes slightly away from the house) and the pattern is generally uneven.
My problem is this - I am installing cabinets in the enclosed space with a granite counter (purchased secondhand). Obviously, I need to level the cabinets and get them off the concrete. However, I do not want to build a full floor with 2X6 joists as this will add to the overall height and could make the difference between the bar height outside and inside off.
If it makes a difference I am in Southern Ontario, Canada.
Any thoughts of ideas would be appreciated.