Begin by rimming the glasses: Add salt to a small plate, then squeeze the juice of 1 lime onto a separate plate. Dip the rim of the drinking glasses into the lime juice, then dip into the salt. Set aside. Then, in a blender, add the juice from 4 Limes with the Orange Juice, Mango Chunks, Limeade and the Agave Sweetener. Pulse several times until liquefied, then add the Ice and pulse again. Pour into salt-rimmed glasses and garnish with lime slices.