Mixed my own grow medium & need help with choosing hydro vs. soil fertilizer

This is my first grow & I am 3 weeks in. It's time for me to shop for some fertilizers & I am not sure which type to buy - hydro or soil? The one I am looking into is the Fox Farm trio, which comes in either hydro or soil. Please help!!!
My grow medium is:

1 part Perlite
1 part Vermiculite
1 part Worm Castings
2 parts Miracle Gro Potting Mix (made of "forest products compost," peat moss, & fertilizer - .21% N, .07%
phosphate, .14% potash, .10% Iron)
2 tbsp Dolomite Lime

I would be grateful for any advice or suggestions. Thank you, my friends.
P.S. I have attached a picture to show off my mutant plant w/ conjoined leaves. I have 3 plants all coming from the same mother & this is the only one that looks like this.

Be patient. Its not a sprint. Its a marathon. Do nothing but water, keep bugs off and feed some. Don't be so over bearing with the plant. Get it in a bigger pot. The leafs are just growing.
If its clone you may see 1,2 and 3 leafs on some Calyx. I know it sounds simple but considering 90% comes from the genetics. Just provide lots of MOTHER NATURING.
Create the environment but don't OCD on the plant. I do it like that most years. Always get the very best - good luck and keep us posted.

Be patient. Its not a sprint. Its a marathon. Do nothing but water, keep bugs off and feed some. Don't be so over bearing with the plant. Get it in a bigger pot. The leafs are just growing.
If its clone you may see 1,2 and 3 leafs on some Calyx. I know it sounds simple but considering 90% comes from the genetics. Just provide lots of MOTHER NATURING.
Create the environment but don't OCD on the plant. I do it like that most years. I Always(Lie - most of the time) - get the very best result - good luck and keep us posted. Don't necessarily get caught up in all the marketing hype. See what is best for the plant not some for profit fertilizer maker.

ok, thanks. They aren't clones, by the way. Just 3 seeds from the same bag.

I use Botanicare Pure Blend Pro nute line, all organic and you can feed early with it!!! Contains, seabird guano compost, kelp and more! I have 2.5 week ol little ones with 'full mass' root wauds in 6 inch pots. I will post pics at next transplant.

I would recommend this just because its very easy to use, hard to 'overdose' the plants and if you got it on the leaves it wont burn it!! I use a little more than the bottle label recommends i use about 23ml/gal and upping it up to about 30ml/gal in weeks 2-6, as opposed to the recommended 15ml/gal for the first week of veg.

http://www.htgsupply.com/Product-Botanicare---Botanicare-Pure-Blend-Pro.asp