I'm a hydro grower who never has much smell, and Critical Purple seemed to have average smell.
It's been a couple years since I grew it, so these are old recollections.
Mine got huge and yielded huge.
Without any topping or training, it got around 7 ft tall.
It was very potent, and is still one of my favorite sleep strains.
I'll be growing it again in a few weeks.
If height is an issue you might want to choose a different strain.
Mephisto has a lot of small, potent strains, but their seeds are in high demand, and hard to find.
Their Strawberry Nuggets is my best sleep strain, and doesn't get too big.