Keep it simple, water, light, nutrients and a clean environment and it's hard to go wrong. I wouldn't recommended barney's farm, I've heard a lot of bad stories about them. I would go for In-House Genetics or Raw Genetics. Or maybe Cannarado Genetics. Start them off in 1 litre plant pots for a few weeks and then transplant them into 10 litre plant pots and give them a good shot of Rhizotonic after transplant to help perk them back up, Start with a light feed solution like Canna Start and then once they come out of the seedling stage start feeding them lightly with Canna Coco A+B and it's hard to go wrong, just make sure you water them until run off when they get a good rooting system and you will be fine