As I said, the mission doesn't work properly. You should have gotten the Daedalus later in the mission as well as Shepperd (I think) but there are a few lines in the script that messed everything up. So yeah, in a way you are "supposed" to only have jumpers and the spacestation. I think at the time it is impossible to win the mission except you can defeat 3 hives and their darts with 3 (or was it 2?) squadrons of puddle jumpers.