Are you going to have fencing for a chicken yard? If so, just get the fencing, unroll it vertically, making a circle fence-high.
For shade, throw a tarp or bedsheet over it.
That way everything is re-usable.
I did the same thing, only bigger. Without the temporary T-posts, the longer run would fall over. If you made the circle 8-10 ft in diameter, it would stand by itself.
I didn't use all the fence (100 ft), but didn't cut it because I am going to reuse it when I get the permanent fence up.
This way, you can put your money into fencing you will use later rather than a tent you probably won't.
John