LG is making a big deal about how versatile that projector is when it comes to mounting and positioning. I'm sure you can make it work.

The big things to keep in mind are that the projector will likely perform better when it's not at the extremes of its range and make sure you keep it square and centered to the screen to avoid using the keystone feature. It tends to reduce image quality.

I really want to see and hear about your installation.