I'm wanting to covert my 5 gallon coller into a mashtun. I'm hoping to make it for as cheap as posiable without sacrificing quality. What all will I nee to convert it? I know you need some sort of false bottom, but my cooler has wheels and that creates indentations on the inside of the cooler so the bottom isn't flat. Is that a deal breaker or is there something I can do? Thanks!