Hi Lisa
Only you can decide what to do, for me personally I took the choice to move into Management earlier than my original goal date (and weight) but I knew that I was in danger of seriously losing the plot.
I am happy with my choice so far, I don't think I will live to regret it because I am happy with where I am.
If you think you may lose the plot then I personally would say move on earlier. Surely that is better than to start nibbling and/or binging through desparation?
I think you are motivated enough to continue your weight loss journey without the massively strict guidelines now, so maybe you should start to move up through the CD plans as you said you were going to do?