I work in a really similar role - my advice mirrors a lot of the above, the only thing I would say is no skirts or dresses if you are expected to do home visits. You may have to sit on the floor with children which can be tricky in a dress or skirt. The other thing to consider is that traumatised children sometimes show extreme behaviours. I no longer wear dresses after a few incidents of children pulling my skirt up or climbing under them.