I am answering your question without factoring in the money. We have a Toyota Sienna - 2008 and a Toyota 4 Runner -2001 both are paid for in full. My husband and I switch cars based on what we are doing - mainly how far will he be driving as the 4 Runner is "his" car. Sienna has 98K and 4 Runner has 190K.
I have two children, 3 and 7. I prefer to have the Sienna with them - the van is lower so I don't have to help them get in and out. The 3 year old can't climb into the 4 Runner on his own at all! Plus we have the automatic doors on the van and even if they weren't automatic - the sliding doors make a huge difference in where I can park and making sure no one slams a door into another car. My 3 year old sometimes forgets about the door and has hit his head on the bottom of the rear door several times!
The van gets better gas mileage, is a smoother ride for long distance driving and has much more room than our SUV. I had a Toyota Solara - two door very sporty model before the van and swore I would never have a mini-van. Now I plan to drive one until the kids finish college (can you say tailgating!)...maybe longer. Oh, and our SUV only seats 5 while the Sienna seats 7. Since we often take grandparents or friends along it is better to have more seating.
Again - for us the van is cheaper. Less gas, less expensive for upkeep (the tires on the SUV are a fortune!), cheaper insurance (can't explain that one but it is true).
Be careful about the lower car note - are they actually just folding in what you owe on the Caravan into the new note on the Journey? If you are trading another 3 year car payment for a 6 year loan are you helping yourself? I don't do leases because we drive too much - seems like you do to since most leases are for 12K annually and you did 50K in 3 years?
Good luck!