3 and a half days in Corsica?

any suggestions for the places to visit? From Nice to Corsica and then come back to the south of France.
Calvi, Calanque, Ajaccio, Bonifacio, Bastia. Are there any suitable routines to visit Calvi, Calanque, Ajaccio and Bonifacio at least?

My suggestion (hope you have a car- is:

-the "finger"/wild landascapes, black beaches, the famous Agriates Desert
-Calvi/nice little town
-Porto/Calanques
-Corte and Restonica Valley (internal)/if you love hiking
-Bonifacio/best little town in Corsica