You could try Histoires de Parfums 1969 which is peach and rose with chocolate all mixed together. I do not like it but you may as it fits what you want.
The L'Instants are cocoa dominated but no straight up chocolate. If you do not mind the distinction then the EDT would be more suited for Summer. Also Hanae Mori EDT would be a good choice that you mentioned.
And last but no means least there is Rochas Man which is a decent scent which you can get away with wearing in the Summer.