Which Soil to buy?

Hey guys,
Have just ordered my Auto AK47 seeds from Dr Chronic and was wondering if I should buy either BioBizz All Mix or BioBizz Light mix.
I know the light mix is good for starting off due to its low nutrients, but as I already have Organic Veg and Bloom feeder as well as Molasses, do I really need to get the All Mix?
buying both is not preferred.
Anyone have experience on how the Auto AK47 handles nutrients?

Friend of mine used pure perlite/vermiculite mix with his AK47. Turned out really well. I'm used to using Fox Farm soil. I did pretty well with the Fox Farm soil, but now i'm trying out the pure perlite/vermiculite mix...

if you want soil and cant find the stuff that people recomend because you dont live close to a supply then the best soil you can get is seedling and cutting soil infact its not soil its compost lots of people refer to compost as soil when infact its not (soil is the stuff in your garden), anyway get seedling and cutting compost after 2 weeks you can start to feed the plants nutes every other watering where as if you buy compost that holds a lot of nutes you will not know if you can add more nuts to the soil or when to add them, seedling compost will be depleted of nutes with in 2 weeks then you control what your plants are given.

Thanks guys,
I have easy access to Biobizz 'compost', so I think I'll go with the light mix and use my nutes.
On the Biobizz nutes bottles it states 2-5ml / litre of water with every watering.
I tend to use both Veg & Bloom nutes together during flowering and usually add a little molasses every week in combination with BioBizz All Mix. This has produced some nice Northern Lights and Lowryder 2 plants. Do you think this may be excessive with AK47 auto strain?
This will be my first AK47 Auto grow.
cheers

I have to take my hat off to Dr Chronic, ordered my seeds midday, and they arrive in a DVD case the morning after, recorded delivery! great service for UK growers.