Good idea to glove up, I do when working with green manures, ferments, and soil batching (if I remember), and pesticides. I like calcium nitrate, 2 birds one stone, a good micro nutrient and a dash of bloom ferts should cover the bases.
The following statement is based on others reports about ffof though I can confirm I did have fungus gnats when using it. Since I stoped using it, others have reported ffof used thripes to combat the fungus gnat issue, I have zero confirmation of this but do know a mix of de and perilite (gnat nix ismjust perilite) as a mulch will either reduce or eliminate the population, or effectively contain both. Plus de is source of silica which if keeping a bonsai mom in the same pot for years will eventually be a needed ammendment or fertilizer.
Benificial microbes are good regardles but can be of particular value to minimze impacts of stressors, particularly in transplant. These things live in the soil/root interface and dusting the roots with microbes (MYKEs, renew, roots organics, IMO pick a brand with a wide spectrum and go with it), during transplant can help with the shock regardless of if using salt based or organic ferts.
Opinion based on a combination of facts and experience.
Edit LED or t5 for light?