Don't use MG soil it sucks there are time releasing capsules that feed your plant up to 3-6 months in there soil you don't want that. Use Fox Farm soils or pro-mix is good put I think PM doesn't have any nutrients in the soil but FF uses a bunch of organics. I use FF happy frog there's also there ocean soil mix also that's good. For nutrients Use FF line up or use others if you want to but usually you want to get 3-pack of nutes thats pretty much standard.
Yea those pellets fuk u over. But orgnaic nutes are always swell. Now mix sone happy frog and ocenforest. Get superthirve,vitaminb1,agrozyme
and azamax for pests. Or neem oil
for veg stage foliar feed nutes that contain micronutes or teas