Will 6 pounds each, of chicken and beef, be enough to serve 24 people?

I'm hosting a party where I'll be serving chow mein, steamed rice, broccoli beef and a chicken-veggie stir-fry. I'm planning on using 6 pounds of beef and 6 pounds of chicken plus veggies. Do you think I'll have enough food for all 24 guests. (18 adults and 6 kids)