1) Regarding Piano, depanding on what brand you are looking for, there is one Piano store operated by Chinese, you may get a new one below 3000
2) Regarding Piano teacher, you may find a lot information on Chinese news paper once you get here. You may contact me in future. (my two daughters are learning now)
3) Regarding English at school, I don't think they will ever teach English at publich elementay school, not in high school neither, this is according to the information I got. But kids will learn English from each other.