that sounds good philli. what's the color spectrum on that HPS? im' betting it's sufficient to flower with. new leaf growth will occur in the first few days of flowering and continue as bud growth does as well. u'll see the very distinctly white hairs if it's female...coming from those areas.

start ur flowering feeding very very lightly, the super bloom, like once a week or less. use more as your plant can take it.

i'm not a plant god, but i think this is pretty decent advice. just take it slowly and carefully and you'll make it through alright.