Rajan is a name of Hindu / Indian origin, and is commonly used for males.
According to the Food Network, 1/3 to 1/2 pound of potatoes should be allocated per person when preparing mashed potatoes. When serving roasted potatoes, 2 1/2 pounds of potatoes should be allocated per person.
By that reckoning, sweet potatoes pose a challenge: One large baked sweet potato provides over 37 grams of carbs, which represents most of your allowance for that meal. By that measure, incorporating a sweet potato can sharply limit what else goes onto your plate.