Hi, welcome to the camping world, it's the best decision you'll ever make!
when I looked at your campers, they were all beautiful. that's how they're supposed to look. I love the outdoor kitchens also!
is this your first ever camper? I agree with the other posters, the trailers you're looking at seem a bit heavy for what you have. and long. you have 2 children, you didn't say boy or girl. my experience with girls is that they pack a ton of clothes and many pairs of shoes. I think you can easily get a camper to fit your family without going to the size you're looking at. 26-29 feet will give you what you need. and on rainy days, you do need to be comfortable inside as well.
as far as options -- storage space, and counter/cooking space, are super important. as to slides, I, Personally, don't care for the slide on the curb side of the units, I think they take away from our outdoor living space, but that is my feeling on slides. while the outside kitchen is a dream, does anyone know what they add to the total weight? also, the weight in the brochures, is way off. if you are not ordering a trailer, but rather taking one off the lot, the updated weight with options should be tagged on the street size of the unit up front. you'd be surprised!
I don't think any of us can advise you on what trailer to ultimately purchase, because everyone feels differently about the different brands out there. when I was still towing, I purchased my unit from a dealer somewhat near to my house. now, I keep my unit in a campground in VA, we live in NJ, and we bought that unit from a dealer near the campground.
all the units are very pretty nowadays, so go with a floor plan that works for your family. with only 2 children, and perhaps a friend or 2, I don't think you need to go to 30' + .
whatever you decide, best of luck with your purchase and many happy years of camping to you!
Ricky T's (aka Rick & Theresa)