There's a million other ways to go. Solar on every parking lot, over every irrigation canal, and along every highway. Some farming can be done under solar panels, as well; some commercial crops prefer shade, such as strawberries.

The US uses about 30% of its land for cows. One simple plan is that we all eat one less burger a week. Which would be a good idea, anyway.

Land usage is so not a problem as soon as you open up the dual use possibilities.