Deadlifts are not the greatest just to add weekly to your workout. You will get to the point pretty soon where 7 days are not enough rest to recover from the load. I would do them every 10-14 days when you reach that point.
Deadlifts overfatigue the lower back and you will get to the point after one month of doing them that your lower back gets fried and you will feel it the second you try to pick the weight up, there is nothing there.
Deadlifts are a great exercise but that is one exercise you cant just throw together with other really tough exercises and think you have a program. Gotta get that rest in.