Leave the wings.
I don't turn mine over. I don't use oven bags so maybe you have to turn them.
For time I do half an hour at 180 for every half a kilo of chicken so the average chicken takes about and hour and a half. If you poke fattest bit of the thigh and pink juices come out it needs to go back in for a bit longer. Once the juices are clear it's cooked and if there is no juice it's probably over-cooked lol.