Within the past three years I have been to WDW twice, DL once, HK Disney once, and all of the parks in SD. In terms of Disney, to be honest I would not take a DSLR there. I took my 5D2 with me in the past and found it more cumbersome than usual.
There were admittedly times I was glad I had it. The 5D2 + 50/1.4 were very useful for photographing + videoing the night show at California Adventure. The 5D2 + 16-35 were also very useful in HK Disney - where we were chosen as Grand Marshalls for the day and were paraded across the park.
On our last trip, though, I only took my Fuji X10 and it was by far the best choice I ever made. It is small enough to fit in a pocket and takes great pictures. Here is a set of shots I took with it there -
http://www.flickr.com/photos/calevphoto/sets/72157628607245971/. I really felt sorry for the poor souls lugging around DSLRs while trying to hold their kids hands and go on rides. I have done that myself and it just isn't worth it.
For San Diego, that is a bit different question. For SeaWorld and LegoLand I would only take my X10. For the zoo and animal park, you'll really need a DSLR + decent lens. I used my 70-200/2.8 II quite often for photographing the animals and even added my 2x III extender a number of times. Of the lenses you list the 70-200/4 IS would probably be the best bet. You should also consider adding a 1.4 extender. You could just take a 24-105 if all you're really interested in is family shots and not so much the animals.