I want to create a giant version of the board game risk, with the idea being that I can play it in a war room style, with everything supersized. Original board size is 20"x30". I have an image file of the board and want to get it printed on something like a 40"x60" sized canvas/print, which is the equivalent of 4 normal sized boards. I want it to be waterproof as beer and port will be getting spilled on it at some point I'm sure. I have looked online and I can get it mounted on acrylic, but its not cheap. I don't mind paying for it, but I don't want to be paying a few hundred quid. If anyone has any ideas or recommendations, I'd appreciate it!