I want them to be 3 feet (i have like 4 feet but want enough room from the light when it is at the top) maybe a bit more at the end of flowering. I think i might do some slight lst to allow more light down once they are taller, or maybe trim the shade leave since they are huge! What are proper ways to trim to achieve proper light penetrations, ie what to do, when to do it and not to do? I just don't want to have 3ft plants that only flowered 1ft from the top.