You and a friend go to shop to buy something in a dialogue tell how to express your interest and make choice in French

Could someone who speaks french look over some text i wrote to see if it is correct? my meal: je vais manger les 4 morceaux de poulet mccroquettes et le biscuit de l'omrm aux morceaux de chocolat. je vais boire l'eau dasani. le repas contient 330 calories. my friends meal: mon amie va manger le wrap-éclair au poulet grillé avec sauce chipotle et le biscuit de l'omrm aux morceaux de chocolat. ils vont boire le jus d'orange minute maid. le repas contient 570 calories. i am ordering items from mcdonalds and stating how many calories are in each meal.