It would definitely work. Just know that TGM does not spit out a tour plan for you. You can get lots of info. on his site such as whats the best days to go to each park and why, what rides you should do at certain times and why etc. He allows you to come up with your own plans that meet your needs. He does have plans that you can follow or you can take his plans and revise them to your wants and needs.
We used him back in Nov. and things worked out great. We walked onto everything and had a very relaxing vacation.
Annie