To get the fastest water entry into the pipe, choose a 4-inch 8-row lateral drain pipe. To save on cost, go with a 3-inch 4-row pipe that will give you a similar water entry rate into the pipe as a 4-inch 4-row pipe, but the 3 inch costs less than the 4 inch.
For more information about pipe material, click here.

The rate of water movement through the drainage pipe network.

Choose a drainage coefficient that is greater than or equal to drainage intensity.

To learn about drainage intensity, watch this video.