Some looked like day 16-17 eggs, some had draw down. Everything with draw down went to the hatcher. Everything else stayed in the bator. I guess it's an experiment. I was afraid they'd drown if I put them all into lockdown before they looked ready. It's the LG still air, so I'm sure they were in cold spots.
I'd leave them, and check them a lot. If ya just set the candler on top of the eggs, if your still using the LG with a lid that can be just cracked open a bit, it won't hurt anything.
Of course, that's just what I would do, and I don't have much experience!