If you start thinking ahead to maintenance, to a long-term way of eating, you'll see that you need a lot more veggies than induction levels for optimal health. So I say, yes, begin add them in now. Atkins says to 5 g every two weeks or so...you'll be making the trip down the road to excellent long-term eating habits this way.

The problem with determining CCLL this way is that you may stall, which has nothing to do with your carb level (just a normal stall), and you'll feel compelled to lower your carbs again. If you wait two weeks to up the carbs every time, and only cut back the same 5 g in case of a stall, you should be able to find the CCLL.

If you're lucky enough to be able to lose at 40 g or more (which is a bunch of veggies!), start adding berries and melons regularly as well, as well as extra nuts and seeds. (though, rtj, I would not eat berries alone--if you're severely hyperinsulinemic, this could be a problem. Have cream with them and perhaps a piece of cheese, too, to mitigate the insulin reponse.) You can also add in higher-carb veggies--peas, carrots, winter squash. All these foods have wonderful health benefits and give you variety, as AC said, as well.