Here's the "sticky" article on cycling from the top of this section of the forum:
You don't say what fish you intend. I always cycle with live plants; well planted, a few fish, away you go. Can explain more if asked.
"Seeding" the tank by adding live bacteria helps start the nitrifying bacteria. Bacterial supplements can assist in this, but I would recommend Tetra's SafeStart or Seachem's Stability. StressZyme is not the same. Again it depends upon the intended fish.