honestly fella trust me go for soil if you sure but coco is just like growing in soil but you feed in veg and flower, you get bigger yeilds faster growth and amazing roots. And you use the same feed from start 2 finish 2ml per liter of water right the way threw the grow. But As you defo want soil go for Canna Profesional soil and canna vega for veg growth and Canna Flores for flower ( and use pk Canna 13/14 3 or 4 weeks from finish for 2 weeks) then flush with plain water the last week. Also I can recomend you buy Rhitzotonic and Canazyime Both are root promoters and great stress relivers. 600w light is perfect but 400w is ample for 4 or 5 good size plants ( 1 or 2 ounce of dry product per plant is a good average) Also a 125w Eco light is perfect for keeping mothers and rooting clones/ germinating. You could just get the 6 plant kit from growell add a eco light and small propagator and be growing by the end of the week for £170 fella. you got some beans yet?.