Spend a good part of the day tracking/worrying/discussing about Issac

I admit I am a control freak and I dont deal well with changed or uncertainty. I spend so much time/effort/$$$ to plan this, and I just want it to be "perfect" I guess for a first trip at least.
DH seems not too worry about it. He is easy going that way. Usually he is pretty good of calming me down but it doesnt work today. I wish he can understand all my time and work I put in to this trip. He told me once that it is his biggest dream to bring his family to Disney since as a child he went to
Disneyland like every other weekend. Well, I thought he would be so excited planning this trip with me but apparently not. I am a little upset (sorry

)
The past 8 months, he doesnt seem to care much about the planning. All I got is "whatever you want to do" then now to the packing, I will be packing all by myself too. He spend his good day off with his computer or Iphone. Now he will be working until the night before we leave. I am a full time stay home mom, but I work online full time too. It doesnt seem fair right now.
I guest I am having a moment where the very first time I felt like it doesnt worth it any more. I dont know if I am just too worry about Issac or more upset with DH or just tired running after 3 kids, working, packing and cleaning.
Should I just call the whole thing off since now Issac added to my list of reason not to go?
I am sorry and thank you for reading my vent. I never been to WDW so it is so hard for me to focus on the magic moment when I never seen it. I think I need some words of encouragements right now.