One of the biggest things to remember about these kinds of fertilizers is that many of them are granular and time-release. Many of them should say on the package what percentage of the fertilizers are soluble, and what percentage isn't. If you plan to use these, get acquainted with learning how to accurately determine your pH, and also watch out that you don't overfertilize later. Much of those chemicals may still be present in the soil, while some may get depleted faster.
I think that same company markets a similar fertilizer that's complete with, like, twenty something beneficial bacterias, including mycorrhizal fungi. This is great stuff for roots, and it also acts as a fairly complete fertilizer if I remember correctly. Bear in mind though, I'm sure it's in slow-release granular form, too.
And welcome to the boards!
