would probably bend them over right now also, and keep bending them over for the first few weeks of flowering as per when you start to flower that is really up to you, a longer veg time will probably not increase your yield. but if you had better hid lighting and had more space to work with a longer veg time will help wich is why you will get many different views on when to flower.
would keep the lights as close as possible and switch to flowering soon.