So we're in the planning stage of our pizza oven and are very excited ...we have no backyard space so we plan on building ours up on our deck on a custom built steel stand on casters (not sure if casters are a good idea?) Wondering what size oven will keep us around 300-500 lbs so as to not add too much weight onto our deck.We can reinforce the deck but would rather not! Of course we'd like the oven to be a good enough size for more than one pizza at a time. And if anyone has a photo's of a similiar build please let us know where to find them ! So excited !Thanks !