My son and daughter-in-law have this bar area in their den where they’d like to install shelving to store/display glassware. They were thinking glass shelves with a mirror behind them. How do you install them (i.e., what type of brackets or other materials do they need)? The space is 85” wide. Can a piece of glass that long be hung in one piece or would it need to be divided? Do you recommend one mirror for the back or mirrored tiles? They would prefer to DIY, if possible. I’d appreciate any guidance. Thanks in advance.