Exactly what I thought. We just had 2 tons of soil delivered and the mount was a lot bigger and it took us around 3 hours to spread it on the front yard 😅
You should put in some native plants under that fabric. They offer far better erosion control than concrete or gravel can even come close to, and look beautiful doing so.
Me and my extended family did pretty much the same job last month for our grandparents, except we used a tiller machine for the sod and it was like 8 times the size ish. We had a lot of help though, and it took us probably 5-6 hrs