Backyard Project 1

We're landscaping our backyard. We have a small backyard. We're digging up 1/4 of it, easy. Unlike when we did our front yard, we don't have a vacant lot right across the street to dump our dirt. It's a whole other process to actually do something with the dirt. It's OK, though. With a little resourcefulness, we'll get it done. Question is - how long will it take us? (We started Friday.)