LED's can be expensiveas far as I know for the amount of bud they produce. They work great if they're high quality and theres a lot of them, but that's that. The future of LED growing is yet to come. I'd go with some HID lighting at least 600 watts, 1000 if you want some monster plants and you got the space to cool it. There are TONS of reputable seed vendors..My personal favorite is Sannie's.