I am a sliding door fan

In most all cases, if you make them correctly, you can completely remove the glass and have full access to the cage, as well as glass will look nicer longer, as acrylic scratches easily, gets dirty easily, and tends to look like crap after a few years of use.
I would suggest contacting a GLASS store for heavy duty tracks, and maybe even making a litter dam, and having tracks and glass on the outside. You can probably contact a glass store online to see if you can purchase and have tracks shipped to you.
good luck.