It's coming soon!

I got in contact with Mike Kirby, which by the way is a very talented artist (check out his website at http://mikekirby.net/), and he suggested to do a sculpture out of a mixture of cement and plaster.
It can be ranging from the picture on the left to the picture on the right. I really liked the work he did in his female figure and the dancer. I would love to incorporate that in mine. My sculpture is going to be located outside the art room in the sculpture garden (a garden that has no sculptures as of right now). This area is protected by a wooden fence. There is enough room to create a big sculpture, but with if I use cement and plaster, I wonder how big this sculpture can be. I know some sculptures that use this material need some sort of wire or wire mesh to hold it up, so would I have to shape my wire first? I am really excited to start working hands-on in my project. The day is coming soon! I'm assuming the actual process of the sculpture won't take that much time, so I'm also looking forward to present my work.