Unless you absolutely need a sliding door, I would consider a double glass swinging door. One leaf that stays shut and is held closed with head & foot bolts, and the other leaf as your active, high use leaf. Every sliding door I've ever had works great when new, but eventually operates hard and is a general pain in the butt. Hinged doors simply work better.
Pretty simple job for a good carpenter, but might seem pretty tough to someone inexperienced.
I'd recommend you acquire some help for this, or at least do a bunch of reading, watch youtubes, etc. before starting.
