BioBizz + Plant Magic Oldtimer Granules?

Hi, i was wondering if these products would work well together?

I'll be using BioBizz Light Mix soil and their complete line of nutrients, growing autoflowers.

Someone suggested me i should use Mycorrhiza so i bought this on a discount: https://grownuphydroponics.com/plant-magic-organic-oldtimer-granules-mycorrizhae.html

- Is it ok to use those granules from seedlings, or is just meant for transplants?
- And since it increases root mass, should i still use BioBizz Root Juice with this?
- I'll be using small 1-2 gallon pots, do you think the roots would grow too much?
- Will there be a problem when i use Neem Oil on the leaves and it drips down into the soil?
Thanks!

It will all be fine.

That stuff is pricey for what it is. Look up Dragonfli on Amazon.

Thanks for the reply.

It was on discount for Black Friday so it was cheaper than this website. The shop i bought it from only had this option for Mycorrhiza, or a 1kg package for 100€.

I searched for Dragonfli, but i couldn't find any relative results, just some bath rugs, table mats and bed sheets lol