I'm going to be building my sub box for my 2 12in RE SX's. This thing JUST fits in the trunk of my car lol. The box is going to be 4ft@30Hz. I'm hoping to pick up my MDF tomorrow. For how big the box is going to be, i'm only going be paying $50 for all the MDF. It's 3/4in thick. So what kinda stuff will I need to use to put it together? Glue? Screws?