This advice is not what the folks at TBS recommend for their premium live rock. I suggest the OP strike up an email dialog with them to get the best advice from the vendor. They are super nice and responsive. They want you to be successful.
Pay attention to the nuances of the recommendations. For cycling new tanks, TBS recommends using their base rock as it will introduce the microorganisms needed for a functioning system without putting larger organisms at potential risk if there is an ammonia spike from die-off (which should be less likely or non-existent since the main organisms on base rock are very robust in the transfer process).
The reason they recommend adding the premium rock to an established tank is to give the best chance to preserve the "premium" life on the rock which will do better in an established system and may be harmed during the die-off process.
I agree with the suggestion to start dialog with supplier.
It is still funny to me that almost all cycling threads end up this way, especially due to certain consistent factors.
Maybe some day we can have more concise and agreed-upon information regarding what is actually happening in cycling.
This is my take, if worth anything to anyone:
Cycling is one aspect of a full ecosystem to equilibrate inputs and outputs. Cycling refers to the establishment of nitrifying bacterial populations that are a key part in our systems. For all ammonia added to the system (directly through chemical additives, food sources, or biological processes in the livestock), there must be enough bacteria or other consumers (such as algae) to use or break down the ammonia. The greater the amount added to the system, the greater the amount that needs to be processed without concentration rising, potentially to damaging levels in our closed systems.
To establish the populations of nitrifying bacteria, an initial introduction is needed. This can be acquired in 3 common means: 1) naturally from air/water everywhere, 2) brought in on media from an established system, or 3) purchased directly in bottled form.
1) The natural method typically takes the longest to become established since the initial introduction is minimal, but it does work to add saltwater to a container, add an ammonia source, and wait. Without good measurement methods and a high level of patience, this method is not as reliable unless a long amount of time elapses focusing primarily on just bacteria production without adding fish or corals. It may work, but it is more risky.
2) Bringing in media from an established system is one of the most effective methods, as strong bacterial populations already exist on the surfaces and are ready to process ammonia immediately (though there still needs to be a balance between amount of media added and rate of introduction of ammonia to the system to avoid harmful circumstances). This method includes live rock (true live rock from long-established system that is kept wet) from friends, vendors, or the ocean directly. If this method is used, there is a chance that transfer from one system to another causes a die-off of organisms and subsequent spike in ammonia that can be harmful to more organisms and can spiral out of control if not maintained. Typically, this should not be the case if transferred properly. This method can be an instant stability to the new system, but there are still some risks involved that need to be taken into account. I do not think this method should include introduction of chemical ammonia (concentrated/synthetic additive in a bottle), as it puts macro-organisms at risk and does not provide a substantial benefit over the use of more natural methods through other life forms and food sources.
3) Bottle bacteria is the newest method discussed here. It is a working method, but it also requires time and care to properly follow instructions so as not to rush the introduction of organisms only for their hurt. No macro-life forms should be added to the tank while following this method, as they put organisms at risk and mess with the process. Since this method is commonly paired with the use of dry rock, it will not be as fast as using established media, since the bacteria populations on the surfaces of the new system have to become newly established rather than building from existing colonies. This method is often facilitated by the addition of chemical ammonia, which is acceptable since there are no macro-organisms in the system to be harmed by the high levels of ammonia. This is also a good way to know how much ammonia is being added in order to put measurement metrics to the process.
The main thing I think is significant enough to mention, even though I do not seem to find it in the common language/writings today (I really wonder why? I think it could help people have a better understanding of what is actually happening biologically?) is that tanks need to reach a state where they are
cycling, not "cycled." This is to make the distinction that the nitrogen cycle does not happen once at the start of a new system, but is rather an ongoing cycle in the system where constant ammonia additions from the organisms and foods are processed/consumed/removed from the system. I find it helpful to consider the ecosystem balance for the closed system, knowing that all inputs have to be processed or they build up in concentration in the closed system.
Though I hope it stays civil, I like to see ongoing discussion about the cycling process, especially from more considerations of the biology and chemistry behind it, as it provides an opportunity for us to learn more about our systems and how to properly keep them.
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