Since they're already cut you may as well experiment till you can get adequate light. Try the windowsill. Watch out for heat tho. Try the cfl. If they live, and you have time to coddle them, go for it. It's fun trying to keep them alive. Lol. Or, wait till you have proper lighting and start over on the right track. I did the tomato's and grape prior to even trying cannabis clones. They all thrived, I tossed the tomato plants when they rooted (7 days) I kept the grape. It is not rooting at 7 days, but is thriving and even growing new leaves. I have Og Cheese and Dream Cookies hybrid right now, both from bag seed, but both were really good, and almost ready to take cuttings from. Gawd, I forgot how slow Indica grows compared to sativa.