Your place looks a lot like my cousin's place in Paoli, OK (south of you). You have much more green than I have. It's really starting to "brown out" here.
My pond is about 100' diameter and horseshoe shaped. The dozer was going to start around the edge opposite the open end of the horseshoe and push dirt out toward the open end of the pond where some willows and other trees are (see panoramic paste-up attached). By starting at the edge, the dozer operator would keep from sinking into the soft silt. The operator told me probably two days for this job and he wanted to push down some of the trees to make it easier. So, 16-20 hr and about $1,200 to $1,500 was the expected price for this job. Hope this helps. Notice my "red" soil? It ain't OK red, but it is red enough./w3tcompact/icons/smile.gif
JimI