Hello fellow LED'er.
I checked out the sanlight Q6W specs and it looks like it's perfect for what you're doing and has the adequate footprint for up to a 3x3 scrog. So, you're good there.
If you'd like some height on the girls, simply raise the light upwards and allow them to purposefully stretch a bit. When you're happy with their height, lower the light back to normal to start forming your tight internode spacing. I do about the same thing so I have something to train and can open them up way better. I'm presuming that's what you're looking for too?
Anywho, hope this helps and good luck getting that height👍. Cheers. Throw me a PM if you'd like to talk supplements to help rapid growth, if you're not already using them.