Hey I've just done this window sill grow thing just as an experiment, we had 2 crazy storms pass through just as they were about to be planted so I decided to keep them inside, they've done very well, much better r than i expected, a couple of points I'd mention is they don't really look like their sisters that are planted outside the flowers aren't quite so fat and they seem to taking slightly longer to finish flowering, apart from that I'd definitely grow this way again, good luck with your grow