Keep your long runs at at least 70 minutes
When your doing that little of a workout, don't break it into sets. Go to lane 7 start at the start line. When you finish do a walk back to the start line and begin again. 12-15 a 2-3 seconds faster then race pace.
Tempo, switch them up, some days when your only going 3 run 16:30, other times run 4, start at 6 minutes and cut down each mile.
Strides everyday there isn't a workout.