If it's hot, the van interior will be *really* hot. Mine has the a/c but I don't recall ever being in a place where I could plug in and it was hot enough to warrant the a/c. While I've got a Honda 2000 portable generator, I've never taken it with the van.
The Traverse is a minimal rig and definitely not for everyone. But it does what it does very well and raising the top gives you plenty of headroom.
2001 GMC EC 2500HD, 4x4, 6.0 V8
2002 Pleasure-Way Traverse
2002 Lexus Land Cruiser (LX470)