As others have said, TGM won't give you a customized touring plan. It will give you a list of attractions with ratings, descriptions, and the best time of day to visit each of them. This list is based on what you say you want to see. When you fill out the initial questionairre, you will be asked whether you want to see everything or just the good stuff. Once the list is compiled, you'll be able to add or remove attractions from that list. But this list isn't nearly as important as reading the articles and using his sample touring plans.
As far as getting a touring plan, he provides several sample plans for each park. Some are geared towards those with small children, while some are geared towards those with teens and adults. If you take the time to read all of TGM's articles and advice first, you will be able to build your own touring plans, using his sample plans as a base.
The other great thing about TGM is his least crowded days list for each park. He tells you which parks are the best choices for each day, but more importantly, he tells you why this is the case. This gives you the knowledge you need to be able to customize your own plan and be flexible. He also gives advice on holidays and special events, like the 50th celebration, SW weekends, gay days, grad nights, Food and Wine festival, Flower and Garden Festival, etc.
I highly recommend TGM if you aren't a WDW veteran. We used it for our first WDW trip in early May of this year, went on all the big attraction, and NEVER waited in line more than 10 minutes. I'm about to sign up again since I'm planning another trip for next spring again.
