Blend 5 cups mango, lemon juice and sugar in a food processor, blend until smooth. Beat cream cheese, the mango mixture, and condensed milk with electric mixer on medium speed until well blended.
Mix the gelatin powder and boiling water together in a separate cup, stir until gelatin completely dissolved. Pour gelatin mixture slowly into the cream cheese mixture while the electric mixture on low speed.
Pour the remaining mango on crusts, spread evenly. Pour cream cheese mixture into crusts. Chill for about 3 hours or until it gets firm, ready to serve.