Let me convert that to feet for anyone who doesn't know.
1 x 1.5 x 2m = 3.3 x 4.9 x 6.5 ft
You have plenty of space for several smaller plants. Or you could just grow two plants and veg them a bit longer to fill up the space.
@E_heroi Lol Canadian
Edit: forgot the "eh"
How will I know if they’re going to be a smaller grow? just the strain you get? or is there a way to make them smaller an bushier ?
just as an example. If you buy from a seedbank they generally have a category for stouter plants. Even if you click the Indoor section you should be pretty solid.
Training is generally the best way to keep them shorter.