Are the legs adjustable so it can sit higher? Is the Height adjustable? Like can you make it taller?

No. It is a set height. The legs are not adjustable. You would need to place the whole screen on something elevated. The height is not adjustable. If you wish to make it higher, you could probably rest it on something.  It is a fixed height and it stands greater than 8ft when fully assembled.

For more information please check out our guide setting up a great backyard setup
http://outdoormoviehq.com/ultimate-guide-to-outdoor-movies
Or take a look at our recommended projectors and screens
http://outdoormoviehq.com/outdoor-movie-screens