I had mine pumped from the street to the back of my garden, the line was about 50m. They moaned about the length when they got here, I think above 50m and they start to charge extra.
Mine was 6m x 4m, 150mm thick. Your size I'd be tempted to DIY it if you have the time.
For the sake of £25 or so for a sheet of steel mesh, I'd be tempted to chuck one in, it really does strengthen the concrete and helps prevent cracking