Need help to choose my route!!

Hi!
2 my friends and I are going to leave Italy to Marrakech on the 5th of september; we'll stay in morocco for 15 days!
We think to come back to italy from Siviglia (because plain thicket are lower!), so we must arrive in Tangeri about on 18th of september.
Can you help me to decide the best route between:
1)marrakech - essaouira - el-jadida - rabat - volubilis (moulay idriss) - fes - gouffre du friouato- chefchaouen - asilah - tangeri - siviglia
2)marrakech - ourzazate - rissani - erg chebbi - midelt - (azrou) - fes - gouffre du friouato- chefchaouen - asilah - tangeri - siviglia
is it possible visit all these places in 15 days travelling only by public transports?
Thanks!!
francesca