High AdyTekk,
She will still strech in the first weeks flowering. It is actually a really nice size plant. You can scrog or train her so that all the canopies are growing at the same hight and will recieve light equally from your lamp.
Happy Growing! 😋
Well you can see you have done some training on it. So that slowed the vertical main stem growth. 50 cm is 19.6 inches so she will be over 2 1/2 ft when finished. Cheers!