I've built similar designs in the past and was unhappy with them overall. My designs and pics of building one are very popular here on BYC. I still get comments on it.What about something like these designs? I was thinking of something similar for myself, till I realized that with my very hilly yard that no chicken tractor would be easy to move anywhere and it would never sit level. Still for you it might be an option since it's rounded it isn't as susceptible to tipping or flipping in the wind, can be staked down if needed and should be able to be moved with a hand truck. I know a lot of people put tarps on the cattle panel design tractors but I personally think sheet metal (if painted with rust proofing) or some other light roofing material is a longer lasting nicer looking option.
Every one I made ended up getting picked up and trashed by thunderstorms or high winds. Something about that tunnel-like design that lets it go parasailing at times.
Not very pretty either. My current design is great for growouts and is essential for my goose raising efforts, but not ideal for a group of breeding birds that need nestboxes and roosts, so I'm going back to the drawing board to make it better. Still keeping that one though, just adding more.
I have lots of flat ground and so movable designs are perfect for me. Not ideal for everyone, but I have had 4 or 5 large hoop houses going at once in the past. Growing out chicks and ducks was much better in movable pens.