Crank Pulley questions

Hey people, I just picked up a lightweight crank pulley for my '99 DX, and I'm thinking of tackling the install myself, and I need to know the right belts to pick up. Also, I have AEM pulleys installed on my alternator and PS. Has anyone else done an install like this? I need to get the correct size belts before I go tearing things apart. Also what is the size of the crank pulley bolt, and is it better to remove it with a torque wrench or an impact wrench? I would like to get all of the tools I need together before anything. Any help would be greatly appreciated, thanks!!!

The PS and the alternator do nothing for HP. You will actually see your battery drain faster with the alternator one. But anyways, belts should be the same size. In order to remove it, you need a strap wrench, and a 19mm socket with wrench. You can definitley try an impact if i doesnt come off.

-Bryan