I replaced french doors with a large slider about 5 years ago. It's a large 2 panel slider about 9' wide. We did a Marvin Integrity series and it's built like a truck. I wouldn't hesitate to do it as long as you get something good.
Definitely recommend wrapping the ribs for the last 1-1.5 hours. They get a little dry if you don't. Also, Fogo is awesome. I like it best on the Large BGE. I like Rockwood the best of the XL since Fogo seems to burn pretty quickly on the XL.