Ought to start with what you want to do with it? What's your budget? Is this an only vehicle? How many more kids are you planning in the next 4 years?
Other than that you ought to look at if you need all the stuff. Does the baby really need a gigantic stroller (don't do the gigantic stroller, get one of the small folding style), port-a-crib, play mat, case of diapers, case of wipes, 40 pounds of snacks, 12 changes of clothes, bounce house, mobile, etc. I hate to say it but with the first kid every time my wife and I went to Grandma's the vehicle was loaded to capacity. After some time, we trimmed it down and as the kid got older and got mobile the amount of stuff really dropped. I take 4 kids to grandma's now with about 1/8 the crap that I used to.
