Hi it is just my opinion, I prefer to carry less. What you mentioned is quite a complete system of gears if you are going there just for holiday unless there is an assignment. The gears that you bring will make you carry less Timberland and Levis stuff back from there =P Furthermore you wont wan to lug around with it all day like Disney.
Just a few question like why bring a grip and backup cam? Why dun just 18-105 to cover all the fast lens and shoot in DX.