You right and I should put them outside, however I live in the Upper Peninsula of Michigan and the weather here is crazy. The sun doesn't shine much in my area and it's cool (50 degrees at night, 70 during the day), even in the summer and it's often cloudy.
Yes, I have five plants, but I won't be harvesting 5 plants. Some will be male and I know that unless I improve my lighting situation, I'll need to cut them down to two female plants, anyway.

How does the health of the plants look? I know they are small for three weeks, but all in all, (to me) they look really good, other the one that looks a little sick.