I love the Full over Full option! 
My 9 year old now has a space all of her own, and a big space at that! 
The height between bunks is wonderful as well. An adult can sit on the lower bunk perfectly , without bending their neck!
Assembly was fairly easy as well. 
The only improvement I would make is the width of the ladder. It's on the narrow side and there no room for adjustment . The stepping rails are narrow as well, so watch your footing!
Overall, we give it a 2 thumbs up!