How well your plan will work could depend on how busy a day you are going. However, I see a few potential flaws in your reasoning. If you make Tower of Terror your first G+ LL, you can make your second two hours after DHS opens. If DHS opens at 8:30, as it does now, that will be 10:30, not 9:00. You can then make your next one two hours after that (12:30). You can only make a G+ LL for Tower of Terror after the return time is 2:00 or later. Today, it was almost Noon before the return time was after 2:00. Of course, if you go at a busier time, the return time will reach 2:00 much earlier. As the prior poster said, once you get a G+ LL for Tower of Terror, you can modify it to a later time once the return times have changed to the time you desire. So, your Tower of Terror strategy works better on busy days. However, if it is a busy day and you wait until you book your third G+ LL of the day (12:30) to start booking at MK, you may find that some of them. like Jungle Cruise and Peter Pan, are only available for times after you will be hopping, while some of the ones that are available for times before you park hop will nevertheless be hours in the future, meaning you won't be able to get many of them before you park hop unless you spend your time on your phone refreshing for better times. It's on the days that are least busy that you can book a G+ LL at MK with a return time not far in the future, then book another once you tap into that, then another . . .