I tried to post, but my internet died, so if I wind up with two posts, that's what happened.
Here's what I wanted to say.
I know you said DH wants to help with the feeding, but it will only be for your vacation that he wouldn't, and even then he could be the one to feed the baby the cereal. The pump and stuff are such a hassle (this is coming from a mom who pumped at work). Also, you listed snacks and several other food items. If the baby will be six months old (I think that's what I read), you will not be giving all that much food. Our ped reccomends starting solids at 4-6 months, but I have to say from experience that I would wait until just before six months. Many people have trouble maintaining their supply after they start solids. Also, if you are BFing, you won't be giving juice then either. I don't think we gave DS any juice until he was 9 months or maybe a year.
I've seen plenty of babies in just swim diapers, you only need a suit if you want the baby to look cute. We like the Coppertone baby sunscreen, and started using it with DS at around six months.
I feel like a lousy mom when I look at your list. We just took DD who was two months at the time, and we took hardly anything. Isn't it funny how different people are?