as its your first grow, maybe ditch coco and go for soil???
its do-able, but starting with coco where you have to slowly introduce nutes, it holds not much water, and its a bloody long earning curve, you have your ladys poped up in coco, as a first time grower i would think you will run into a world of problems, i would suggest getting a bag of biobizz all mix, transpanting your plants, and only feeding water until 21 days or when the leaves start to yellow a tiny bit, then feeding half strengh veg nutes, slowly building up to flowering, then switch. i have done a couple of coco grows and i had problems from day one, it seemed every deficiency i managed to get through i had 2 more the next day and t carried on both grows until i transplanted them.... now i stick to soil, (biobizz all mix) there is alot of people out there who say it is too hot for seedlings but i have never had a problrm, i plant seeds in final pots, and the soil does most of the work, i just water/feed/watch/dry/cure/smoke and fly