So what I understand is that a couple are 2 weeks old, and the others are 6 weeks old (?) They are very small and stretching for light.
3000 lumens/sqft is the minimum... aim for over 5000. The lights should be an inch or two away, as long as they aren't scorching the leaves.
El Cheapo Guide to Lighting
Answers about CFL, HPS, How Much Light...
But what can I really say, if you don't have any money
Buy one less 12 pack and get some more Y adapters and stronger bulbs (min. 23w, preferably 42w, depending on how much your sockets can handle). Don't eat out for a week or two, and there's your ventilation (oscillating fan, and a bathroom exhaust fan). If you're already not drinking or eating out, then I don't know what to say other than putting them outdoors is always an option (just don't bring them back inside).
Good luck
