Ive grown LR2..........it will get about 15 to 20 inches. Its easy to grow and a good overall strain.
The smoke it fruity and pretty potent.
I like the Auto flowering strains because they are small, and you should get about a OZ dry per plant.
You grow them just like a house plant. You dont have to worry about a timer malfunction messing up your flower cycle.
When I grow a Auto flower for the first time I always do a seed run.
Good luck.