What works better?

Ok, well I think I have semi finished the "temporary" cage. It is actually working out quite well, and I don't feel the need to rush out and buy the metal grids.... especially for Christmas with 8 kids!! I do have a couple of questions though.... We put it on the tile in an alcove area off of the dining/pc area. They usually have fleece or an old blanket down and then I took the bottom to their old store-bought cage and put carefresh in it. Their Pigloo is on that and in the opposite corner is their food bowl with their pellets. Then across the way is one of those soft round cat beds, and that has all their hay in it. I was wondering if I should put the pigloo on the cat bed so it would be warmer? And then line the bottom of the old cage with their hay?? Which set up is better? I am not really sure what they would prefer, but I figured many here have probably experimented with the different arrangments.

Thanks for all your advice and help,
Lisa