Switching LED to T5?

I need some advice. I recently planted some autoflowers. They are sharing a room with two other girls which should be done in 2-3 weeks. I'm using two 300W LED.

Here's my dilemma. One of the girls needs 1 one of the LED. The second LED has to cover 4 plants. It's just enough for 3. She's getting some coverage but needs more direct light.

I have a T5 arriving on Monday. Would it be ok to move her (1-1.5 weeks old) to a new closet and use the T5? Eventually I planned on moving back under LED after I harvest my other girls.

I asked one of my buddies who has a lot more experience then me. He thinks it's a bad idea and I could harm her.
Thoughts? advice? Thanks in advance