I am also a Dukan dieter and I have to agree that I think it might fit your needs in terms of being very structured and not involve a lot menu planning.
I did it in 2011 and lost 65 lbs in 6 months. Unfortunately, I stopped doing it - which is MY fault, not the fault of the diet - and I gained back almost 60 of what I had lost. I started again on Jan 6 of this year and am down 15 lbs.
I find it very easy to follow and I am eating foods that I really like.
I never signed up for the online coaching - it would have been about $300 for me (it goes by how much you have to lose) and while I think you get a lot of support for that money, I chose to do it on my own, with the support here at 3fc.
Good luck and if you have any questions about this plan, I am more than happy to answer them.
And you can check out the Dukan thread here
http://www.3fatchicks.com/forum/othe...-part-3-a.html