I dont have a lot of experiance with dark eldar so the only thing I can suggest is to remove the 2 dark lances from the warrior squad and replace them with more mobile weapons. Because you're only playing 500P you will rarely meet tough vehicles and also you got a dark lance on the raider transport.
voted for Tree of Life Imps ftw ^^ and also I think that bots have a postive and a negative factor. On the one hand they make the battlefield much more intense so the players feel more like in a huge battle but on the other hand if the bots aren't coded very good then they often become quite useless or too strong.