2700K is the right color for flowering but it doesn't sound like you have enough watts to produce decent buds. I could be wrong, I've never done a grow in such tight quarters.
What you should do is look for pc stealth box grow threads either in this journal section or on the internet. I'm sure there are some threads with the exact same specs as yours.
What you should do is look for pc stealth box grow threads either in this journal section or on the internet. I'm sure there are some threads with the exact same specs as yours.