LR2's are great lil autos..
I grow them in between my other plants to fill the grow space.
Topping isnt really a go idea with LRs, it'll slow growth, which isnt good as these have a limited lifespan and you'll get more colas but alot smaller in size.
Mine grow unmolested, and end up 16-18" tall and i average approx 2.5 oz wet from each plant.
Its a nice sociable smoke, that wont knock your ass out, but will be a good chilled buzz.
Harvest late for amber trichs an its a very subtle up high, then instant couchlock...but in a nice way.