growing in a small space

I have a small indoor area for growing a plant or two but will it be high enough?
Total height is about 90cm but need room for a 250w bulb so I recon maximum plant height will have to be about 80cm (about 2.5 ft)

I will choose a strain that is short, I have seen one that says .70 to 1metre, but the ones I really want to grow are 100-150cm

Is there some way of pruning them as they grow to make them shorter and wider

I know nothing about plants so this might be a dumb question

thanks for any tips
MC