Welcome to planDisney, Michael! I am so excited you want to begin planning a vacation to Disneyland Resort for you and your family. There is nothing better than spending time together at the Happiest Place on Earth!
Since you plan on visiting Disneyland in August, I recommend booking your vacation as soon as possible, so that you have time to secure theme park pass reservations in the order you wish to visit
Disneyland Park and
Disney's California Adventure Park. I recommend spending a full day at both parks, and a third or fourth day with the Park Hopper option added so that you can solely focus on the rides and attractions you loved the first time before. Michael, since you have a large party, I
recommend the Vacation Packages office at (714) 520-5060, or the Tickets office at (714) 781-4636.
One final recommendation I have for your family is that since you will all be together, the best way to maximize your time may be to split up at some point during the day (on the third or fourth day!) and reunite at the end of the day at dinnertime, so you all can recap the adventures you had that day!
Have the most magical vacation at Disneyland, Michael! Say hi to my pal Mickey for me!
Frances