I would also look at a trip that takes much less planning. One thing I learned about
disneyland is that really don't need to plan to take a trip. August is really far away from now, and there is no reason to plan that far ahead. That is one of the great things about disneyland--you can decide to go one day, and then then be there the next with no planning whatsoever.
One of the best trips we ever took was last summer (in July) where I decided to go with my girls (two weeks out) and we just did it. We actually got a great rate on the hotel room, and just bought our 3 day parkhoppers. We stayed at the Disneyland Hotel. There were rooms left in many of the hotels on Harbor as well--we could have stayed at the Best Western PPI or Farfield Inn. I know because we did end up going at the last minute a day early and got a room at BWPPI for one night (but they could have taken us for all 4 nights if we had wanted it). The next day we checked into the Disneyland Hotel for 3 nights, and got an amazing last minute deal from Expedia.com.
I have never been a planner for disneyland--we just get our parkhoppers and decided what to do when we are there. This would probably drive others crazy, but it has worked for us all these years. Sometimes I will make one or two dining reservations, but we have even gone with none and still eaten at the same places with no problems.
This is the difference between Disneyland and Disneyworld. You CAN decide to go at the drop of a hat and still have an amazing time. There is no real reason to "plan" so far ahead, unless you just like to.