"I just want to get everything right before I fork out so much moolah! "

Well, you can always make a similar setup with a piece of roof flashing, a couple of skewers and a cheap aluminium pan to see how it goes. Kath and I use a couple of plastic airline coffee cups to drink out of (12g each), so we can use a wider Ti pan for cooking two person meals, and a 20 gram microwave safe plastic dish we bought a pasta meal in for the second dinner plate. That way, we get to drink wine with the main course. ;-)