So sorry to see you break that, reminds me of the million times that happens to me working on projects.
One option that might look better and be cheaper is to just remove the glass doors, add a slide and order one sheet of glass or a acrylic sheet, if you want you can do double sliding doors. I did a custom snake tank from a tall aquarim, the front glass door slides open, love the look. My python tank is a zoom-med with custom glass lid instead of a screen for a nice top-down view and to trap humidity.
Personally, I would remove the doors and black vent strip, replace them with a nice hinge stystem, like the ones for showers and order custom glass at my local glass shop. I would say about $100-$150 cost, but would look very clean and very custom.