If you say this is not your primary vehicle why an SUV? Much better for just a few dog is an extended cab pickup with a 4 hole topper. Tundra, Ford, Chevy all similar if not the same as SUV versions up front. With a topper all of the dog junk and smells and training gear are separated from the passenger cabin. Way nicer. Plus it's not a good idea to have a dog in one of those seatbelt harnesses in an accident. I just saw a video of crash dog dummies in various seat restraints and it wasn't pretty. Far better to have them in a hole.
edit: Plus you can't leave your dogs in a closed locked SUV but you can lock the doors on their kennel holes, crack or close the vents and run fans if you want. Never need to worry about heat or cold in a topper.
Here's a 4 hole topper on a Ford
on a Chevy
on a GMC
This is what a 4 hole topper looks like from the back. Water Tank, Electric, Drawers