How to see Morocco in 7 days?

Flying into Fes's International Airport and out of Marrakech's International Airport.

1. Day 1: Arrive in Fes.
2. Day 2: Explore Fes.
3. Day 3: From Fes make your way to Merzouga / Erg Chebbi (Sahara Desert)
4. Day 4: Sahara Desert.
5. Day 5: Sahara Desert to Marrakech.
6. Day 6: Explore Marrakech.
7. Day 7: Depart Morocco from Marrakech.

Is 7 days in Morocco enough?