It's hit or miss with the additives. Although the best rated one is the bio spira I've learned in my journeys.
I've used it before and can't really say that it didn't or DID work so its up to you.
If you get some good live rock you can cycle in days or a couple weeks at most. Or you can do it the old fashioned way and either add a raw shrimp for decomposing and getting ammonia or even adding straight PURE ammonia.
Have you read the articles on here about cycling your sw
tank? Very good information.