looks very healthy 12/12 lighting and it will flower and if your worried about height top or fim next time you grow and get a better light 600 watt or 1000 watt lights work well
it might be okay to add a little bit bud candy with the other nutrients you just got to be careful not to over do it with nutrients . nice plants by the way
get a good fan that cover your 5x5 area cover up your window exhaust it out though your window just make sure nothing is showing from outside and if your have a filter on the exhaust fan there is no light going out side and it should be just fine