As far as the chocolate you can get dairy free chips at your local store the store brand ones (the cheaper) ones usually don't have milk in them there still somewhat high in fat so I don't use the whole amount it calles for at first like I would just do 1/2 of cup and you'll still have plenty of chips. If you have a kroger close by I use there brand of chips and have never had a prolbem with them.You can get dairy free chips at a health food store but there very high!
The smoothie sounds great... if you like mango . I think it would work out great. Try it and see. Thanks for the idea though. I am really tired of peaches, blueberries and strawberrys.