Plants are looking beautiful man, just like they always do man. You're doing great!
It says to add the micro first, then add the grow and bloom afterwards. Also, don't mix the nutes by themselves, it will cause nute lockout. Mix the micro into your water, then add the other two. All you need is the 3 part setup, the other additives are not required, but I'm sure they will make a difference. Right now I'm just using the 3 part.
Don't use soil in the pods, dog! Use the sponges, they work fine. The aerogarden is not made for using soil, nor is it a good idea. If you wanna do soil, just use some regular pots, or even like solo cups or something, but then you'll have to get soil nutrients.