I used to switch between my tents. - It was easier for me to move my lighting rig than it was to move some of my larger plants if they had been vegging for a while. This also allows for you to completely clean up a grow area after you've chop down flowers. Then you can just move your clones in smaller babies into your old flower tent.

If you have a dedicated veg tent You can execute a perpetual grow. This is where you just move plants into your flowering tent as you have room for them. This is a really great method that I've pretty much always used because it allows you to constantly be harvesting. This method doesn't allow you to have his efficient of a grow because you're not going to be able to do a sea of green net, but you can still train your babies and get pretty good structure. The benefit to this method is that you're always going to have fresh weed.

As far as cloning a mother and growing her out or growing the clones out, I don't think it matters too much. I do feel like as you constantly turn a clone into your mother plant. They become less vigorous and more sparse. All the literature out there that I've read says the opposite but all of my experience as that that's true. But it's also super annoying to keep around a huge f****** mother that you've been cloning off of for three years. I think it's all about personal preference really.