Our family of five have done a few long trips with our hybrid , no problems with leaks or heating. Furnaces heat hybrids up just fine , although a little noisey.If you're planning on alot of one night stops bear in mind that a hybrid takes a bit more set up time than a TT , but after a few set ups it goes pretty quick.
My only issue with a long trip would be your tow vehicle. Mini vans are not really made for towing. Does yours have a transmission cooler? Heavier suspension ? I towed my hybrid with a mini van when I first bought it but after a couple of trips decided to switch to a larger SUV, still plenty of room for the kids. There are lots of hills once you get to Alberta.
I've never heard of anyone having an issue with cooking smells in a hybrid.
I'm sure you'll figure everything out , sounds like a fun trip..good luck feel free to PM any questions
