Go fishless. Zero chance of introducing disease or parasites, and no fish get hurt in the process. If you use fish to cycle, you have to do alot more water changes and keep a closer eye on ur parameters. Fishless is alot less hassle. Also, when you use fish to cycle, you create a biofilter that is sized to the bioload of the fish you used to cycle, which can be a problem if you're planning on heavily stocking the tank. When you go fishless, you create a huge biofilter capable of handling any load right away, because you're using an ammonia concentration far greater than what will be normally in the tank.
Just use additive-free liquid ammonia, or granulated ammonium chloride. Raise your ammonia concentration to about 2-4ppm. It will go even faster if you use old filter media in conjunction with the added ammonia.