Best easy organic soil to go with GO Box?

I bought the General Organics GO box in a bit of an impulse buy a few nights back and then learned about the glory of building a really good soil.

I'm wondering if I can still build a good organic soil that's fairly affordable and still use the GO box?

What would the essentials be that I need? I already have kelp meal and alfalfa. I was thinking Sunshine #4 organic?

Any tips would be greatly appreciated!

Lot of good info here about soil mixes:

http://rollitup.org/t/recycled-organic-living-soil-rols-and-no-till-thread.636057/

I used the GO line when I first started organics and did not like it all all. I would build a good soil.


P-