Halogens are worthless for growing, that small CFL would be better than any halogen you can use, on that same note im going to recomend you get better lighting or you are most likely waste your time without the proper lighting.
Rule of thumb is:
3,000 Lumens per square foot are the least neccesary for a good growm
5,000 Lumens will get you a nice grow
anything higher than that and youre on your way to hemp fest!!
Good Luck... :aok: