Whitch of these to buy?

Fellow growers my plants are now 11 days old and IMO they are doing really well, I am trying to look ahead to the flowering stage but I have not got a clue which Nutes to buy and feed my girls with so here I am looking for advice.

Basically this is all that is available to me in Ireland, do any of you's use these or anything similar I would really appreciate your guidance, I know that you can not see the NPK ratio.
Here is where I can buy from.

Plant & Vegetable Food, plant food

Thanks for any replies.
Dave.

 

Thank You for the reply, I am glad you said that as I have them planted in organic tomato soil.